1Jo 1:8-10 | TNotes | STEP | 1:8 If we claim we have no sin: This is the second false claim of the Gnostics (see 1:6 ). They claimed that they were or could be sinless since Christ had abolished their sins once and for all—their higher knowledge would lift them above the realm of sin. But Christians do still sin when they live in their old nature (see Rom 7:14-25 ). The true Christian both acknowledges this sin (1 Jn 1:9 ) and trusts in Christ to take it away.

cRom 7:14-25►

d1 Jn 1:9►

‏ 1 John 1:8-10

1:8 ^a If we claim we have no sin: This is the second false claim of the Gnostics (see 1:6 ^b). They claimed that they were or could be sinless since Christ had abolished their sins once and for all—their higher knowledge would lift them above the realm of sin. But Christians do still sin when they live in their old nature (see Rom 7:14-25 ^c). The true Christian both acknowledges this sin (1 Jn 1:9 ^d) and trusts in Christ to take it away.
1:9 ^e To maintain continual fellowship with God, we need to confess our sins to him. Forgiveness and cleansing are guaranteed because God is faithful to his promises and because he acts on the basis of his justice. Christ’s death for our sins fulfills God’s justice and acquits us of our guilt.
1:10 ^f If we claim we have not sinned, we are calling God a liar: God’s word emphasizes the permeating and penetrating nature of sin (see study note on 1:8).