1 John 1:9

1:9 But if we confess our sins, he is faithful and righteous, forgiving us our sins and cleansing us from all unrighteousness.

1 John 2:2

2:2 and he himself is the atoning sacrifice for our sins, and not only for our sins but also for the whole world.

1 John 3:16

3:16 We have come to know love by this: that Jesus laid down his life for us; thus we ought to lay down our lives for our fellow Christians.