The interpretation timeline
1 Peter 1:21 Douay-Rheims

Who through him are faithful in God, who raised him up from the dead, and hath given him glory, that your faith and hope might be in God.

A.D. 155 – 1871 4 witnesses

Patristic

before A.D. 750
155
A.D.
Polycarp of Smyrna Patristic
c. A.D. 69–155
“"Wherefore, girding up your loins," "serve the Lord in fear" and truth, as those who have forsaken the vain, empty talk and error of the multitude, and "believed in Him who raised up our Lord Jesus Christ from the dead, and gave Him glory," and a throne at His right hand. To Him all things in heaven and on earth are subject. Him every spirit serves. He comes as the Judge of the living and the dead. His blood will God require of those who do not believe in Him. But He who raised Him up from the dead will raise up us also, if we do His will, and walk in His commandments, and love what He loved, keeping ourselves from all unrighteousness, covetousness, love of money, evil speaking, false witness; "not rendering evil for evil, or railing for railing," or blow for blow, or cursing for cursing, but being mindful of what the Lord said in His teaching: "Judge not, that ye be not judged; forgive, and it shall be forgiven unto you; be merciful, that ye may obtain mercy; with what measure ye mete, it shall be measured to you again;" and once more, "Blessed are the poor, and those that are persecuted for righteousness' sake, for theirs is the kingdom of God."”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Who by him do believe in God,.... Christ, as God, is the object of faith; as Mediator, he is the way to the Father, by which men come to him, believe in him and lay hold upon him, as their covenant God and Father; and is also the author of that faith by which they believe in him; and all their encouragement to believe is taken from him; and such who do come to God by Christ, and stay themselves upon him, trusting in him, may know, and comfortably conclude, that Christ, who was foreordained from all eternity to be the Redeemer of his people, was manifest in the flesh for their sakes, and to obtain eternal redemption for them, which he was sent to do, by him t”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Who by him do believe in God - This is supposed to refer to the Gentiles, who never knew the true God till they heard the preaching of the Gospel: the Jews had known him long before, but the Gentiles had every thing to learn when the first preachers of the Gospel arrived amongst them. Gave him glory - Raised him to his right hand, where, as a Prince and a Savior, he gives repentance and remission of sins. That your faith - In the fulfillment of all his promises, and your hope of eternal glory, might be in God, who is unchangeable in his counsels, and infinite in his mercies.”
Source
1871
A.D.
1871
“by him--Compare "the faith which is by Him," Act 3:16. Through Christ: His Spirit, obtained for us in His resurrection and ascension, enabling us to believe. This verse excludes all who do not "by Him believe in God," and includes all of every age and clime that do. Literally, "are believers in God." "To believe IN (Greek, 'eis') God" expresses an internal trust: "by believing to love God, going INTO Him, and cleaving to Him, incorporated into His members. By this faith the ungodly is justified, so that thenceforth faith itself begins to work by love" [P. LOMBARD]. To believe ON (Greek, "epi," or dative case) God expresses the confidence, which grounds itself on God, reposing on Him. "Faith IN (Greek, 'en') His blood" (Rom 3:25) implies that His blood is the element IN which faith has its proper and abiding place. Compare with this verse, Act 20:21, "Repentance toward (Greek, 'eis,' 'into,' turning towards and going into) God and faith toward (Greek, 'eis,' 'into') Christ": where, as there is but one article to both repentance and faith, the two are inseparably joined as together forming one truth; where "repentance" is, there "faith" is; when one knows God the Father spiritually, then he must know the Son by whom alone we can come to the Father. In Christ we have life: if we have not the doctrine of Christ, we have not God. The only living way to God is through Christ and His sacrifice. that raised him--The raising of Jesus by God is the special ground of our "believing": (1) because by it God declared openly His acceptance of Him as our righteous substitute; (2) because by it and His glorification He received power, namely, the Holy Spirit, to impart to His elect "faith": the same power enabling us to believe as raised Him from the dead. Our faith must not only be IN Christ, but BY and THROUGH Christ. "Since in Christ's resurrection and consequent dominion our safety is grounded, there 'faith' and 'hope' find their stay" [CALVIN]. that your faith and hope might be in God--the object and effect of God's raising Christ. He states what was the actual result and fact, not an exhortation, except indirectly. Your faith flows from His resurrection; your hope from God's having "given Him glory" (compare Pe1 1:11, "glories"). Remember God's having raised and glorified Jesus as the anchor of your faith and hope in God, and so keep alive these graces. Apart from Christ we could have only feared, not believed and hoped in God. Compare Pe1 1:3, Pe1 1:7-9, Pe1 1:13, on hope in connection with faith; love is introduced in Pe1 1:22.”
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.