(Read 1 John 1:8–2:2.)

Certain apostates said, “We have not sinned,” thus ‘making Jehovah a liar.’ But “God . . . cannot lie,” and his Word shows that all imperfect humans are sinful. (Titus 1:2; Ecclesiastes 7:20; Romans 3:23) Why, saying that “we have not sinned” would mean that God’s word is not “in us,” is not in our hearts!​—Compare Hebrews 8:10.