Verse 8. - The contrary position given to make the statement clear and emphatic. The devil ὁ διάβολος is the great accuser or slanderer, as in Job 1 and 2 (comp. John 13:2; Revelation 2:10; Revelation 12:9, 12; Revelation 20:2, 10). The devil sinneth from the beginning ἀπ ἀρχῆς. From the beginning of what? From the beginning of sin. The devil was the first sinner, and has never ceased to sin. Other answers are: from the beginning

(1) of the devil,

(2) of the creation,

(3) of human history.

Some of these are scarcely in harmony with Scripture; none, perhaps, fit the context so well as the explanation adopted. If the devil committed the first sin, and has sinned unceasingly ever since, then whoever sins is akin to him, is morally his offspring (John 8:44). There is the kingdom of God and the kingdom of the evil one, and man cannot find or make a third domain; if he is not in the one he is in the other. This verse, like John 8:44, seems to be conclusive as to the personal existence of the devil. Ακ τοῦ διαβόλου balances ἐκ τοῦ Θεοῦ: if the one is a mere personification of a tendency, why not the other? Both should be personal or neither. "It is not true that St. John speaks so confidently of a devil because he was a Jew and was filled with Hebrew opinions. For once that the devil is introduced in the Law, the Psalms, and the Prophets, he is spoken of twenty times in any Gospel or Epistle" (Maurice), and not least in the Gentile Luke. With the latter half of verse 8. comp, verse 5. Christ's act in removing our sins from us destroys the devil's works; for by the manifestation of the Light (John 1:5) the darkness is dispersed and destroyed. Our sins are the evil one's works: what is sin in us is his natural occupation. (For λύειν in the sense of unbinding or dissolving, and therefore destroying - a use specially frequent in St. John - comp. John 2:19; John 5:18; John 7:23; John 10:35.) The φανέρωσις includes the whole work of Christ on earth.

3:3-10 The sons of God know that their Lord is of purer eyes than to allow any thing unholy and impure to dwell with him. It is the hope of hypocrites, not of the sons of God, that makes allowance for gratifying impure desires and lusts. May we be followers of him as his dear children, thus show our sense of his unspeakable mercy, and express that obedient, grateful, humble mind which becomes us. Sin is the rejecting the Divine law. In him, that is, in Christ, was no sin. All the sinless weaknesses that were consequences of the fall, he took; that is, all those infirmities of mind or body which subject man to suffering, and expose him to temptation. But our moral infirmities, our proneness to sin, he had not. He that abides in Christ, continues not in the practice of sin. Renouncing sin is the great proof of spiritual union with, continuance in, and saving knowledge of the Lord Christ. Beware of self-deceit. He that doeth righteousness is righteous, and to be a follower of Christ, shows an interest by faith in his obedience and sufferings. But a man cannot act like the devil, and at the same time be a disciple of Christ Jesus. Let us not serve or indulge what the Son of God came to destroy. To be born of God is to be inwardly renewed by the power of the Spirit of God. Renewing grace is an abiding principle. Religion is not an art, a matter of dexterity and skill, but a new nature. And the regenerate person cannot sin as he did before he was born of God, and as others do who are not born again. There is that light in his mind, which shows him the evil and malignity of sin. There is that bias upon his heart, which disposes him to loathe and hate sin. There is the spiritual principle that opposes sinful acts. And there is repentance for sin, if committed. It goes against him to sin with forethought. The children of God and the children of the devil have their distinct characters. The seed of the serpent are known by neglect of religion, and by their hating real Christians. He only is righteous before God, as a justified believer, who is taught and disposed to righteousness by the Holy Spirit. In this the children of God are manifest, and the children of the devil. May all professors of the gospel lay these truths to heart, and try themselves by them.He that committeth sin is of the devil,.... Not everyone that sins, or commits acts of sin, then every man is of the devil, because no man lives without the commission of sin; but he who makes sin his constant business, and the employment of his life, whose life is a continued series of sinning, he is of the devil; not as to origin and substance, or by proper generation, as some have literally understood the words; but by imitation, being like him, and so of him their father, doing his lusts, living continually in sin, as he does, and so resemble him, as children do their parents; and hereby also appear to be under his government and influence, to be led captive by him at his will, and so to belong to him, and such as will have their part and portion with him in the lake which burns with fire and brimstone, so living and dying:

for the devil sinneth from the beginning; not of his creation, for he was made by God a pure and holy creature; but from the beginning of the world, or near it, at least from the beginning of man's creation; for he not only sinned by rebelling against God himself, and by drawing in the rest of the apostate angels into the rebellion with him, but by tempting man, as soon as created, to sin against God: what was his first and particular sin is not certain, whether pride or envy, or what; seems to be, his not abiding in the truth, or an opposition to the truth of the Gospel, respecting the incarnation of the Son of God, mentioned in the following clause; see John 8:44; however, he has been continually sinning ever since: he "sinneth"; he is always sinning, doing nothing else but sin; so that he that lives a vicious course of life is like him, and manifestly of him:

for this purpose the Son of God was manifested; in human nature, as in 1 John 3:5; whence it appears that he was the Son of God before his incarnation, and so not by it; he did not become so through it, nor was he denominated such on account of it; he was not made the Son of God by it, but was manifested in it what he was before; and for this end:

that he might destroy the works of the devil; and the devil himself, and all his dominion and power, and particularly his power over death, and death itself; and especially the sins of men, which are the works of the devil, which he puts them upon, influences them to do, and takes delight in; and which are destroyed by Christ, by his sacrifice and death, being taken, carried, removed away, finished, and made an end of by him; See Gill on 1 John 3:5.