John Calvin's Commentary on the Bible - 1 John 5:18
Verse 18 18We know that whosoever is born of God If you suppose that God’s children are wholly pure and free from all sin, as the fanatics contend, then the Apostle is inconsistent with himself; for he would thus take away the duty of mutual prayer among brethren. Then he says that those sin not who do not wholly fall away from the grace of God; and hence he inferred that prayer ought to be made for all the children of God, because they sin not unto death. A proof is added, that every one, born... read more
Adam Clarke's Commentary on the Bible - 1 John 5:21
Little children - Τεκνια· Beloved children; he concludes with the same affectionate feeling with which he commenced. Keep yourselves from idols - Avoid the idolatry of the heathens; not only have no false gods, but have the true God. Have no idols in your houses, none in your churches, none in your hearts. Have no object of idolatrous worship; no pictures, relics, consecrated tapers, wafers, crosses, etc., by attending to which your minds may be divided, and prevented from worshipping... read more