The interpretation timeline
1 John 4:18 Douay-Rheims

Fear is not in charity: but perfect charity casteth out fear, because fear hath pain. And he that feareth, is not perfected in charity.

A.D. 215 – 1871 12 witnesses 14 excerpts

Patristic

before A.D. 750
date
unknown
c. A.D. 160
“For, fearing the Lord, you will not do these deeds, but will refrain from them. For fears are of two kinds: for if you do not wish to do that which is evil, fear the Lord, and you will not do it; but, again, if you wish to do that which is good, fear the Lord, and you will do it.”
215
A.D.
c. A.D. 150–215
“He says, "Perfect love casteth out fear." For the perfection of a believing man is love.”
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“John, in fact, exhorts us to lay down our lives even for our brethren, affirming that there is no fear in love: "For perfect love casteth out fear, since fear has punishment; and he who fears is not perfect in love." What fear would it be better to understand (as here meant), than that which gives rise to denial? What love does he assert to be perfect, but that which puts fear to flight, and gives courage to confess? What penalty will he appoint as the punishment of fear, but that which he who denies is about to pay, who has to be slain, body and soul, in hell? And if he teaches that we must die for the brethren, how much more for the Lord,-he being sufficiently prepared, by his own Revelation too, forgiving such advice! For indeed the Spirit had sent the injunction to the angel of the church in Smyrna: "Behold, the devil shall cast some of you into prison, that ye may be tried ten days.”
Source
“"There is no fear," says he, "in love; but perfect love casteth out fear; because fear has torment"-the fire of the lake, no doubt. "He that feareth is not perfect in love" -to wit, the love of God. But the man who does not fear to suffer, he will be perfect in love-in the love, it is meant, of God; "for perfect love casteth out fear." "And therefore many are called, but few chosen.”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“As John says: There is no fear in love, but perfect love casts out fear. Indeed, he said this, and he spoke truly. Therefore, if you do not wish to have fear, first see whether you already have perfect love, which casts out fear. But if before attaining this perfection, fear is excluded, it is pride that inflates, not love that builds up. For just as in good health hunger is driven away not by disdain but by food; so in a good mind fear must not be driven away by vanity, but by love.”
Source
“Now therefore concerning this same boldness, let us see what he says. Whence do we understand that charity is perfect? "There is no fear in charity." Then what say we of him that has begun to fear the day of judgment? If charity in him were perfect, he would not fear. For perfect charity would make perfect righteousness, and he would have nothing to fear: nay rather he would have something to desire; that iniquity may pass away, and God's kingdom come. So then, "there is no fear in charity." But in what charity? Not in charity begun: in what then? "But perfect charity," saith he, "casteth out fear." Then let fear make the beginning, because "the fear of the Lord is the beginning of wisdom." Fear, so to say, prepares a place for charity. But when once charity has begun to inhabit, the fear which prepared the place for it is cast out. For in proportion as this increases, that decreases: and the more this comes to be within, is the fear cast out. Greater charity, less fear; less charity, greater fear. But if no fear, there is no way for charity to come in. As we see in sewing, the thread is introduced by means of the bristle; the bristle first enters, but except it come out the thread does not come into its place: so fear first occupies the mind, but the fear does not remain there, because it enters only in order to introduce charity. When once there is the sense of security in the mind, what joy have we both in this world and in the world to come! Even in this world, who shall hurt us, being full of charity? See how the apostle exults concerning this very charity: "Who shall separate us from the charity of Christ? shall tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword?" The consciousness of sins torments the heart: justification has not yet taken place. There is that in it which itches, which pricks. Accordingly in the Psalm what saith he concerning this same perfection of righteousness? "Thou hast turned for me my mourning into joy: Thou hast put off my sackcloth, and girded me with gladness; to the end that my glory may sing to thee, and that I be not pricked." What is this, "That I be not pricked?" That there be not that which shall goad my conscience. Fear doth goad: but fear not thou: charity enters in, and she heals the wound that fear inflicts. The fear of God so wounds as doth the leech's knife; it takes away the rottenness, and seems to make the wound greater. Behold, when the rottenness was in the body, the wound was less, but perilous: then comes the knife; the wound smarted less than it smarts now while the leech is cutting it. It smarts more while he is operating upon it than it would if it were not operated upon; it smarts more under the healing operation, but only that it may never smart when the healing is effected. Then let fear occupy thine heart, that it may bring in charity; let the cicatrice succeed to the leech's knife. He is such an Healer, that the cicatrices do not even appear: only do thou put thyself under His hand. For if thou be without fear, thou canst not be justified. It is a sentence pronounced by the Scriptures; "For he that is without fear, cannot be justified." Needs then must fear first enter in, that by it charity may come. Fear is the healing operation: charity, the sound condition. "But he that feareth is not made perfect in love." Why? "Because fear hath torment;" just as the cutting of the surgeon's knife hath torment. But there is another sentence, which seems contrary to this if it have not one that understands. Namely, it is said in a certain place of the Psalms, "The fear of the Lord is chaste, enduring forever." He shows us an eternal fear, but a chaste. But if he there shows us an eternal fear, does this epistle perchance contradict him, when it saith, "There is no fear in love, but perfect love casteth out fear?" Let us interrogate both utterances of God. One is the Spirit, though the books two, though the mouths two though the tongues two. For this is said by the mouth of John, that by the mouth of David: but think not that the Spirit is more than one. If one breath fills two pipes, cannot one Spirit fill two hearts, move two tongues? But if two pipes filled by one breathing sound in unison, can two tongues filled with the Spirit or Breathing of God make a dissonance? There is then an unison there, there is a harmony, only it requires one that can hear. Behold, this Spirit of God hath breathed into and filled two hearts, hath moved two tongues: and we have heard from the one tongue, "There is no fear in love; but perfect love casteth out fear;" we have heard from the other, "The fear of the Lord is chaste, enduring for ever." How is this? The notes seem to jar. Not so: rouse thine ears: mark the melody. It is not without cause that in the one place there is added that word, chaste, in the other it is not added: but because there is one fear which is called chaste, and there is another fear which is not called chaste. Let us mark the difference between these two fears, and so understand the harmony of the flutes. How are we to understand, or how to distinguish? Mark, my beloved. There are men who fear God, lest they be cast into hell, lest haply they burn with the devil in everlasting fire. This is the fear which introduces charity: but it comes that it may depart. For if thou as yet fearest God because of punishments, not yet dost thou love Him whom thou in such sort fearest. Thou dost not desire the good things, but art afraid of the evil things. Yet because thou art afraid of the evil things, thou correctest thyself and beginnest to desire the good things. When once thou hast begun to desire the good, there shall be in thee the chaste fear. What is the chaste fear? The fear lest thou lose the good things themselves. Mark! It is one thing to fear God lest He cast thee into hell with the devil, and another thing to fear God lest He forsake thee. The fear by which thou fearest lest thou be cast into hell with the devil, is not yet chaste; for it comes not from the love of God, but from the fear of punishment: but when thou fearest God lest His presence forsake thee, thou embracest Him, thou longest to enjoy God Himself. One cannot better explain the difference between these two fears, the one which charity casteth out, the other chaste, which endureth for ever, than by putting the case of two married women, one of whom, you may suppose, is willing to commit adultery, delights in wickedness, only fears lest she be condemned by her husband. She fears her husband: but because she yet loves wickedness, that is the reason why she fears her husband. To this woman, the presence of her husband is not grateful but burdensome; and if it chance she live wickedly, she fears her husband, lest he should come. Such are they that fear the coming of the day of judgment. Put the case that the other loves her husband, that she feels that she owes him chaste embraces, that she stains herself with no uncleanness of adultery; she wishes for the presence of her husband. And how are these two fears distinguished? The one woman fears, the other also fears. Question them: they seem to make one answer: question the one, Dost thou fear thine husband? she answers, I do. Question the other, whether she fears her husband; she answers, I do fear him. The voice is one, the mind diverse. Now then let them be questioned, Why? The one saith, I fear my husband, lest he should come: the other saith, I fear my husband, lest he depart from me. The one saith, I fear to be condemned: the other, I fear to be forsaken. Let the like have place in the mind of Christians, and thou findest a fear which love casteth out, and another fear, chaste, enduring for ever.”
461
A.D.
Leo the Great Patristic
c. A.D. 400–461
“The apostles had to ensure that no other truth would creep in and that no other doctrine would be taught. To do this, it was necessary to increase the capacity of those who were being taught and to multiply the constancy of that love which drives out all fear, not dreading the rage of persecutors.”
523
A.D.
c. A.D. 450–523
“It is necessary that whosoever occupieth the position of a servant should fear, for fear should follow after service in every form; but there is in the love which is not perfect, fear, for the Holy Book saith, "In perfect love there is no fear." So then after the man who beginneth with love and is not yet perfect, fear followeth. One man feareth lest he be struck, and this is the fear of slaves; another man feareth lest he suffer loss, and this is the fear of hirelings; another man feareth lest he cause distress, and this is the fear of friends; and another man feareth lest his name be not handed down to posterity, and this is the fear [of lack] of children. Now although the name of fear is one, yet many different kinds [of fear] are found therein. There is the fear of God which the holy Prophets had, [and there is the fear] which the nation of the Jews had from time to time, but the forms of that fear were different; the Prophets, like friends, feared to cause distress to God, Whom they loved, but the Jews, like slaves, were afraid of the rod of His chastisement.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“There is no fear in love,.... In the love of the brethren; where that is, there is no fear: so far as that prevails and gains ground, fear removes; not the filial fear of God, the new covenant grace of fear, which is the beginning of wisdom, and is consistent with faith, hope, love, and spiritual joy; but either the fear of men, which brings a snare: those that truly love Christ, his Gospel, and his people, they are not afraid of men; the spirit of power, love, and of a sound mind, is opposite to a spirit of fear, nor can they stand together; and such strength there is sometimes in brotherly love, that the saints are not afraid of death itself, but freely lay down their lives for one another; see Jo1 3:16; or it may be rather, that they are not afraid of the day of judgment, and of hell and damnation; where hatred of the brethren has place, there is a fear and dread of these things, as were in Cain; but those that love the brethren, they know they are passed from death to life, and shall not enter into condemnation, and therefore are in no fear of any of these things: but perfect love casteth out fear; when love to the brethren appears to be perfect, that is, genuine and sincere, and a man knows that from the bottom of his heart he sincerely loves the saints, he concludes from hence, as he may, the truth of his faith, which works in this way; and this frees him from the fears of men and devils, and of the future judgment and wrath to come. The Jews have a saying (w), "worthy is his portion that rules over the place of fear, for lo, there is nothing that rules over the degree of "fear" but "love".'' Because fear hath torment: it distresses a man, fills him with anguish, and makes him restless and uneasy, and keeps him in servitude; through the fear of men, of the devil, death, judgment, and hell, he is all his lifetime, or as long as this fear lasts, subject to bondage: or "fear has punishment", as it may be rendered, and is by the Vulgate Latin version; it is a punishment itself to a man; and its being criminal deserves punishment, and is punishable; see Rev 21:8; he that feareth is not made perfect in love; or "by love"; that is, he that is possessed, and under the power of a servile fear of punishment, is one who is not, by the love to the brethren, made to appear to himself to be a sincere lover of God, and true believer in Christ; for was he, he would not be in fear of destruction and death, since whoever truly loves God, and believes in Christ, shall certainly be saved; though such persons, at times, may not be without their doubts and fears. (w) Zohar in Exod. fol. 87. 1.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“There is no fear in love - The man who feels that he loves God with all his heart can never dread him as his Judge. As he is now made a partaker of his Spirit, and carries a sense of the Divine approbation in his conscience, he has nothing of that fear that produces terror or brings torment. The perfect love - that fullness of love, which he has received, casteth out fear - removes all terror relative to this day of judgment, for it is of this that the apostle particularly speaks. And as it is inconsistent with the gracious design of God to have his followers miserable, and as he cannot be unhappy whose heart is full of the love of his God, this love must necessarily exclude this fear or terror; because that brings torment, and hence is inconsistent with that happiness which a man must have who continually enjoys the approbation of his God. He that feareth - He who is still uncertain concerning his interest in Christ; who, although he has many heavenly drawings, and often sits with Christ some moments on a throne of love, yet feels from the evils of his heart a dread of the day of judgment; is not made perfect in love - has not yet received the abiding witness of the Spirit that he is begotten of God; nor that fullness of love to God and man which excludes the enmity of the carnal mind, and which it is his privilege to receive. But is the case of such a man desperate? No: it is neither desperate nor deplorable; he is in the way of salvation, and not far from the kingdom of heaven. Let such earnestly seek, and fervently believe on the Son of God; and he will soon give them another baptism of his Spirit, will purge out all the old leaven, and fill their whole souls with that love which is the fulfilling of the law. He who is not yet perfect in love may speedily become so, because God can say in a moment, I will, be thou clean; and immediately his leprosy will depart. Among men we find some that have neither love nor fear; others that have fear without love; others that have love and fear; and others that have love without fear. 1. Profligates, and worldly men in general, have neither the fear nor love of God. 2. Deeply awakened and distressed penitents have the fear or terror of God without his love. 3. Babes in Christ, or young converts, have often distressing fear mixed with their love. 4. Adult Christians have love without this fear; because fear hath torment, and they are ever happy, being filled with God. See Mr. Wesley's note on this place. 1. We must not suppose that the love of God shed abroad in the heart is ever imperfect in itself; it is only so in degree. There may be a less or greater degree of what is perfect in itself; so it is with respect to the love which the followers of God have; they may have measures or degrees of perfect love without its fullness. There is nothing imperfect in the love of God, whether it be considered as existing in himself, or as communicated to his followers. 2. We are not to suppose that the love of God casts out every kind of fear from the soul; it only casts out that which has torment. 1. A filial fear is consistent with the highest degrees of love; and even necessary to the preservation of that grace. This is properly its guardian; and, without this, love would soon degenerate into listlessness, or presumptive boldness. 2. Nor does it cast out that fear which is so necessary to the preservation of life; that fear which leads a man to flee from danger lest his life should be destroyed. 3. Nor does it cast out that fear which may be engendered by sudden alarm. All these are necessary to our well-being. But it destroys, 1. The fear of want; 2. The fear of death; and 3. The fear or terror of judgment. All these fears bring torment, and are inconsistent with this perfect love.”
Source
1849
A.D.
1774–1849
“Fear is not in charity, &c. By the fear, which a perfect charity and love of God excludes, we may understand a fear of temporal losses in this world, of the loss of goods, of banishment, of torments, of death itself, which the love of God made so many glorious martyrs contemn; or an anxious servile fear of punishment in the next world, for the more perfect charity and the love of God is, so much the more doth it banish this imperfect and servile fear; but as perfect charity does not exclude a love, and constant desire of loving God as our last end, for whose enjoyment we were created, so it does not exclude a fear of displeasing, offending, and losing him by sin. (Witham) — Perfect charity, or love, banisheth human fear, that is, the fear of men; as also all perplexing fear, which makes men mistrust or despair of God’s mercy; and that kind of servile fear, which makes them fear the punishment of sin more than the offence offered to God. But it no way excludes the wholesome fear of God’s judgments, so often recommended in holy writ, nor that fear and trembling with which we are told to work out our salvation. (Philippians ii. 12.) (Challoner)”
Source
1863
A.D.
1796–1863
“" Perfect charity casteth out fear, and not only prevents the commandments from proving an overwhelming burden, but makes them serve as wings to elevate the soul." St. Augustin de Perfectione, c. x.”
1871
A.D.
1871
“Fear has no place in love. Bold confidence (Jo1 4:17), based on love, cannot coexist with fear. Love, which, when perfected, gives bold confidence, casts out fear (compare Heb 2:14-15). The design of Christ's propitiatory death was to deliver from this bondage of fear. but--"nay" [ALFORD]. fear hath torment--Greek, "punishment." Fear is always revolving in the mind the punishment deserved [ESTIUS]. Fear, by anticipating punishment (through consciousness of deserving it), has it even now, that is, the foretaste of it. Perfect love is incompatible with such a self-punishing fear. Godly fear of offending God is quite distinct from slavish fear of consciously deserved punishment. The latter fear is natural to us all until love casts it out. "Men's states vary: one is without fear and love; another, with fear without love; another, with fear and love; another, without fear with love" [BENGEL].”
Source

Undated

date unknown
date
unknown
Glossa Ordinaria Medieval
“Fear is not in charity. In that charity indeed which, in imitation of the divine goodness, does good even to enemies, there is no fear.”
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.