The interpretation timeline
2 Timothy 1:12 Douay-Rheims

For which cause I also suffer these things: but I am not ashamed. For I know whom I have believed, and I am certain that he is able to keep that which I have committed unto him, against that day.

A.D. 407 – 1871 7 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"For the which cause I also suffer these things, nevertheless I am not ashamed. For I know Whom I have believed, and am persuaded that He is able to keep that which I have committed unto Him against that day." "I am not ashamed," he says. For are chains, are sufferings, a matter for shame? Be not then ashamed! Thou seest how he illustrates his teaching by his works. "These things," he says, "I suffer": I am cast into prison, I am banished; "For I know Whom I have believed, and am persuaded that He is able to keep that which I have committed to Him against That Day." What is "that which is committed"? The faith, the preaching of the Gospel. He, who committed this to him, he says, will preserve it unimpaired. I suffer everything, that I may not be despoiled of this treasure, and I am not ashamed at these things, so long as it is preserved uninjured. Or he calls the Faithful the charge which God committed to him, or which he committed to God. For he says, "Now I commit you to the Lord." (Acts xx. 32.) That is, these things will not be unprofitable to me. And in Timothy is seen the fruit of the charge thus "committed." You see that he is insensible to sufferings, from the hope that he entertains of his disciples.”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“Paul says [elsewhere], "I have kept the faith," but the same apostle also says, "For I know whom I have believed, and I am certain that he is able to keep that which I have deposited with him against that day." "That which I have deposited with him" means: What I have commended to him, for some [Latin] copies do not have the word depositum but commendatum, which is clearer. Now what do we commend to God's keeping save those things which we pray he will preserve? Is not our very faith among these? For what did the Lord commend for the apostle Peter, by his prayer for him, when he said to him, "I have prayed for you, Peter, that your faith shall not fail"? This means that God would preserve his faith and that it would not fail by giving way to temptation.”
Source

Scholastic

c. 1100 – 1500
1273
A.D.
Thomas Aquinas Catholic
1225–1274
“Above he admonished Timothy to zealous preaching of Christ; here he leads him to this through an example. And first he sets down this; second he leads him to the following of himself, at the words "having the form"; third he shows the necessity of following, at the words "you know this." Likewise, first he sets down his own office; second he shows what he suffers for the execution of his office, at the words "for which cause"; third, the certainty of hope, at the words "for I know." Now he describes his office in three ways; for he calls himself a preacher, for the arousing to good morals. Below, IV, 2: "Preach the word, be urgent in season." Mark, last chapter: "Preach the Gospel to every creature." An apostle, for the ruling of the Church, because apostles are the prelates of the Church. Galatians II, 8: "He who worked in Peter unto the apostolate of the circumcision worked also in me among the Gentiles." And a teacher, instituted for teaching the holiness of faith and the knowledge of God. I Timothy II, 7: "a teacher of the Gentiles in faith and truth." Joel II, chapter 23: "Sons of Sion, exult and rejoice in the Lord our God, who has given you a teacher of justice." But he says "in which I am placed." Here note three things. First, that he did not assume it to himself, but was placed by Him. Hebrews V, 4: "No one assumes to himself the honor, but he who is called by God, as Aaron was." Second, in the placing, order is designated. Third, firmness, because, being instituted according to the order of reason, he remained firmly. John XV, 16: "I have placed you that you should go and bring forth fruit, and your fruit should remain." Judges V, v. 20: "the stars remaining in their order and their course." Then, when he says "for which cause," he shows what he suffers for the execution of his office, saying "these things" — adverse things — "I suffer," namely chains and weariness, and this for the faith of Christ. Below, II, 9: "I labor even unto chains." And he says "for this cause," because to suffer simply is not praiseworthy, but only for a just cause. Matthew V, 10: "Blessed are they who suffer persecution for justice." And therefore, "but I am not confounded," because it is not to the confusion of him who suffers for justice. I Peter IV, 15: "Let none of you suffer as a murderer, or a thief, or a railer, or a coveter of other men's goods; but if as a Christian, let him not be ashamed," etc. Acts V, 41: "The apostles went rejoicing," etc. Then, when he says "I know," the certainty of hope is set down, which makes him not be confounded; and this too comes from the greatness of God who promises. And therefore he says "in whom I have believed." And note that in one way, to believe is an act of faith; and the sense is "I know," etc., that is, I know that He who promised is truthful, and powerful to render eternal life, which He promised to the man existing faithful. But against this it follows that knowledge and faith would be the same, and the known and the believed would be the same, which is impossible, because it belongs to the nature of the known that it be seen, but to the nature of the believed that it not be. I respond: in faith there are two things, namely that which is believed, and He in whom it is believed. Of that which is believed, there cannot be knowledge, because thus it would lose the nature of the believed; but of Him in whom it is believed, there is knowledge, because it is known through most evident reason that God is truthful. And thus he says: "in whom I have believed." I John IV, 1: "Do not believe every spirit, but test the spirits if they are of God." Proverbs XIV, 15: "The innocent believes every word," etc. In another way, one is said to believe the faith of him to whom he commits his own thing, and this sense is truer; as if he were to say: because I have believed — that is, committed — myself, my labors and sufferings, to God, I know that He is powerful to keep my deposit, etc. And note, that "deposit" is said in two ways. In one way, that which I have deposited. And thus a man deposits with God his own salvation, when he commits himself wholly to God. I Peter V, v. 7: "Casting all your care upon Him, because He has care of you." Psalm LIV, 23: "Cast your care upon the Lord, and He will nourish you." Likewise he deposits his works, namely when he does not immediately receive his reward, but in time to come. And thus, he who does good deposits it with God. And this until that day, when He will judge the hidden things of men, to whom God will then render the reward of their labors. Wisdom X, 17 and Isaiah III, v. 10: "Say to the just man that it is well, for he shall eat the fruit of his inventions." Or "deposit," that is, the office which has been placed in my keeping, namely the office of the Gospel. Acts IX, 15: "This man is to me a vessel of election, to carry my name," etc. Also, God is powerful to keep His apostle even unto his death. Then, when he says "having the form," he leads to the following of himself, and there is a double reading. One says "have," the other "having." If it says "having," then first he sets down his fitness, which he sets before Timothy as an example of the apostle to be imitated; second he exhorts to imitation, at the words "the good deposit." Now the Apostle had good fitness according to two things, namely according to learning as to knowledge; and therefore he says "of sound words." Likewise according to virtue; hence he says "in faith and love." He says therefore: you cannot excuse yourself, if you do not bear yourself patiently even unto chains as I do, because you have the form of sound words, namely which contain no corruption of falsehood. Titus II, 1: "Speak the things that befit sound doctrine." And doctrine is called sound, not corrupted, effectively, because it makes us sound. And he adds "which you have heard from me," as if he were to say: you have not been deceived, because I have handed on to you what I heard from Christ. I Corinthians XI, 23: "For I have received from the Lord that which also I delivered unto you." Luke X, v. 16: "He who hears you, hears me." And this "in faith and love," because if someone knew all the sound words and did not believe, he would not be fit, nor even if he did not love, because he would easily fall away from the doctrine, either through adversity or through prosperity. Hebrews XI, 6: "Without faith it is impossible to please God." I John III, 14: "He who does not love, remains in death." And this "in Christ Jesus," because true faith is of those things which Christ taught, and true love is in Christ, because He gave the Holy Spirit, through whom we love God. Having these things therefore, "guard the good deposit," namely which I have given you, that is, the office of preaching, so that you never depart from the truth, nor on account of fear ever abandon the office of preaching at any time. Proverbs IV, 23: "Keep your heart with all watchfulness," etc. I Timothy VI, v. 20: "O Timothy, guard the deposit." And guard this by a good help, namely through the Holy Spirit, who dwells in us. I Corinthians, chapter III, 16: "Do you not know that you are the temple of God, and the Spirit of God dwells in you?" According to the other reading, he admonishes to two things. First, to sound doctrine; second, to perseverance in it. Then, when he says "you know this," he shows the necessity of the admonition from the falling-away and the progress of others. For when someone sees some of his companions progressing and some falling away, he strives to follow the good. And therefore first he calls to mind those who fall away; second, those who progress, at the words "may He grant mercy." He shows therefore what he should beware of, otherwise there is danger. I Corinthians X, 12: "He who thinks himself to stand, let him take heed lest he fall." And therefore he says: "turned away," etc. The Gloss: these men were full of deceit, for they had been with the apostle feignedly, namely that they might learn, whence they might make calumny against the apostle. These, then, who are turned away from me, are now in Asia, among whom especially are these two, who were converted through James. Then, when he says "may He grant mercy," he shows the progress of others, and especially of a certain Onesiphorus, calling to mind first the good things which he conferred on him at Rome, second those in Asia. Likewise, first he wishes him the mercy of God; second he shows the merit of the mercy; third, the time of the mercy. The first, when he says "may He grant mercy." Rightly does he wish him mercy, because the present life is misery. Job XIV, 1: "Man born of woman, living a short time, is filled with many miseries." He says "may He grant to the house of Onesiphorus," not only to the person, but to the family, because on account of the goodness of one, grace is derived to the whole family. Matthew X, 13: "And if that house be worthy, your peace shall come upon it." Now the merit of the mercy is the mercy which they had toward the apostle. Hence he says "because he has often refreshed me," namely by affording rest. Matthew V, 7: "Blessed are the merciful, for they shall obtain mercy." Ecclesiasticus XVIII, 16: "Shall not the dew cool the heat?" Philemon v. 7: "The hearts of the saints have been refreshed through you, brother." "And my chain." Below, II, 9: "I labor even unto chains, as an evildoer." He was not ashamed, but when he had come to Rome, he sought me out solicitously as a friend. Ecclesiasticus VI, 7: "If you would possess a friend, possess him in trial." Proverbs XVII, 17: "He who is a friend loves at all times." Now he wishes the mercy of the age to come, when he says "in that day," namely in which the Lord will judge all, when mercy is necessary — and not only at Rome, but also at Ephesus. And therefore he is worthy of the divine mercy.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“For the which cause I also suffer these things,.... The present imprisonment and bonds in which he now was; these, with all the indignities, reproaches, distresses, and persecutions, came upon him, for the sake of his being a preacher of the Gospel; and particularly for his being a teacher of the Gentiles: the Jews hated him, and persecuted him, because he preached the Gospel, and the more because he preached it to the Gentiles, that they might be saved; and the unbelieving Gentiles were stirred up against him, for introducing a new religion among them, to the destruction of their idolatry and superstition; and the sufferings which he endured were many; and he was appointed to them, as well as to the Gospel, which he preached. Nevertheless I am not ashamed; neither of the Gospel, and the truths and ordinances of it, for which he suffered; but he continued to own and confess it constantly, and to preach it boldly; none of these things moved him from it: nor of the sufferings he endured, for the sake of it; since they were not for murder, or theft, or sedition, or any enormity whatever, but in a good cause; wherefore he was so far from being ashamed of them, that he took pleasure in them, and gloried of them. Nor was he ashamed of Christ, whose Gospel he preached, and for whom he suffered; nor of his faith and hope in him. For it follows, for I know whom I have believed. A spiritual knowledge of Christ is necessary to faith in him: an unknown Christ cannot be the object of faith, though an unseen Christ, as to bodily sight, may be, and is. Knowledge and faith go together: they that truly know Christ, believe in him, and the more they know him, the more strongly do they believe in him: such who spiritually and savingly know Christ, have seen the glories of his person, and the fulness of his grace; and they approve of him, as their Saviour, being every way suitable to them, and disapprove of all others; they love him above all others, and with all their hearts; and they put their trust in him, and trust him with all they have; and they know whom they trust, what an able, willing, suitable, and complete Saviour he is. This knowledge which they have of him, is not from themselves, but from the Father, who reveals him to them, and in them; and from himself, who gives them an understanding that they may know him; and from the spirit of wisdom and revelation in the knowledge of him: and be it more or less, it is practical, and leads to the discharge of duty, from a principle of love to Christ; and is of a soul humbling nature, and appropriates Christ to a man's self; and has always some degree of certainty in it; and though it is imperfect, it is progressive; and the least measure of it is saving, and has eternal life connected with it: and that faith which accompanies it, and terminates on the object known, is the grace, by which a man sees Christ in the riches of his grace; goes to him in a sense of need of him; lays hold upon him as a Saviour; receives and embraces him; commits its all unto him; trusts him with all; leans and lives upon him, and walks on in him till it receives the end of faith, even eternal salvation. And I am persuaded that he is able to keep that which I have committed unto him against that day. By that which he had committed to him is meant, not the great treasure of his labours and sufferings for Christ, as if he had deposited these in Christ's hands, in order to be brought forth at the great day of account to his advantage; for though his labours and sufferings were many, yet he always ascribed the strength by which he endured them to the grace of God; and he knew they were not worthy to be compared, nor made mention of, with the glory that was to be revealed in him. Rather this may be understood of the souls of those he had been instrumental in the converting of, whom he had commended to Christ, hoping to meet them as his joy and crown of rejoicing another day; though it seems best of all to interpret it either of his natural life, the care of which he had committed to Christ, and which he knew he was able to preserve, and would preserve for usefulness until the day appointed for his death; or rather his precious and immortal soul, and the eternal welfare and salvation of it: and the act of committing it to Christ, designs his giving himself to him, leaving himself with him, trusting in him for eternal life and salvation, believing he was able to save him to the uttermost; even unto the day of death, when he hoped to be with him, which is far better than to be in this world; and unto the day of the resurrection, when both soul and body will be glorified with him; and to the day of judgment, when the crown of righteousness will be received from his hands. And what might induce the apostle, and so any other believer, to conclude the ability of Christ to keep the souls of those that are committed to him, are, his proper deity, he having all the fulness of the Godhead, or the perfections of deity dwelling in him; his being the Creator and upholder of all things; his having accomplished the great work of redemption and salvation, by his own arm; his mediatorial fulness of grace and power; and his being trusted by his Father with all the persons, grace, and glory of the elect, to whom he has been faithful. And now the consideration of all this, as it was a support to the apostle, under all his afflictions, and sufferings for the Gospel, and in a view of death itself, so it may be, as it often has been, a relief to believers, under all the sorrows of this life, and in a prospect of death and eternity. Philo the Jew (b) speaks in like manner as the apostle here of , "the depositum of the soul": though he knew not where to commit it for safety, as the apostle did, and every true believer does. (b) Quis rer. Divin. Haeres. p. 498, 499.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“I am not ashamed - Though I suffer for the Gospel, I am not ashamed of the Gospel; nor am I confounded in my expectation; his grace being at all times sufficient for me. For I know whom I have believed - I am well acquainted with the goodness, mercy, and power of Christ; and know that I cannot confide in him in vain. That which I have committed unto him - This is variously understood. Some think he means his life, which he had put, as it were, into the hands of Christ, in order that he might receive it again, in the resurrection, at the great day. Others think he means his soul. This he had also given into the hands of his faithful Creator, knowing that although wicked men might be permitted to take away his life, yet they could not destroy his soul, nor disturb its peace. Others think that he is speaking of the Gospel, which he knows will be carefully preserved by the great Head of the Church; for, though he shall be soon called to seal the truth with his blood, yet he knows that God will take care that the same truth shall be proclaimed to the world by others, whom God shall raise up for that very purpose.”
Source
1849
A.D.
1774–1849
“I am certain that he (God) is able to keep that which I have committed to him [6] against that day. That is, to the day of judgment. St. Paul here means that which he had committed, or as it were deposited in the hands of God; to wit, the treasure of an eternal reward, due in some measure to St. Paul for his apostolical labours. This treasure, promised to those that live well, the apostle hopes he has placed and deposited in the hands of God, who will reward him, and repay him at the last day. This is the common interpretation. (Witham)”
Source
1871
A.D.
1871
“For the which cause--For the Gospel cause of which I was appointed a preacher (Ti2 1:10-11). I also suffer--besides my active work as a missionary. ELLICOTT translates, "I suffer even these things"; the sufferings attendant on my being a prisoner (Ti2 1:8, Ti2 1:15). I am not ashamed--neither be thou (Ti2 1:8). for--Confidence as to the future drives away shame [BENGEL]. I know--though the world knows Him not (Joh 10:14; Joh 17:25). whom--I know what a faithful, promise-keeping God He is (Ti2 2:13). It is not, I know how I have believed, but, I know WHOM I have believed; a feeble faith may clasp a strong Saviour. believed--rather, "trusted"; carrying out the metaphor of a depositor depositing his pledge with one whom he trusts. am persuaded-- (Rom 8:38). he is able--in spite of so many foes around me. that which I have committed unto him--Greek, "my deposit"; the body, soul, and spirit, which I have deposited in God's safe keeping (Th1 5:23; Pe1 4:19). So Christ Himself in dying (Luk 23:46). "God deposits with us His word; we deposit with God our spirit" [GROTIUS]. There is one deposit (His revelation) committed by God to us, which we ought to keep (Ti2 1:13-14) and transmit to others (Ti2 2:2); there is another committed by God to us, which we should commit to His keeping, namely, ourselves and our heavenly portion. that day--the day of His appearing (Ti2 1:18; Ti2 4:8).”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.