John the Apostle
1 John 3:4ASV·traditional attribution

Every one that doeth sin doeth also lawlessness; and sin is lawlessness.

Albert Barnes Presbyterian

Verse 4. Whosoever committeth sin transgresseth also the law. The law of God given to man as a rule of life. The object of the apostle here is to excite them to holiness, and to deter them from committing sin, perhaps in view of the fact stated in , that every one who has the hope of heaven will aim to be holy like the Saviour.

John Gill Reformed Baptist

Whosoever committeth sin,.... This, in connection with what follows, is true of any sin, great or small, but here designs a course of sinning, a wilful, obstinate, persisting in sin: transgresseth also the law; not of man, unless the law of men is founded on, and agrees with the law of God, for sometimes to transgress the laws of men is no sin, and to...

Jamieson-Fausset-Brown Reformed

Sin is incompatible with birth from God (Jo1 3:1-3). John often sets forth the same truth negatively, which he had before set forth positively. He had shown, birth from God involves self-purification; he now shows where sin, that is, the want of self-purification, is, there is no birth from God.