How can a Christian sin? You are either living for the devil or for God.

Please read: Romans 6, The Book of James, John 5:14-18, John 8:11, 1 John 2:1, 1 John 3:6, 2 Cor 5:17, 1 Cor 6:9-11

To find more scriptures on this topic go ahead and look up online: Scriptures about going and sinning no more.