Believers DO NOT sin ✝
"For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit."
Good trees do not produce bad fruit, and bad trees do not produce good fruit. Just as such, does not a believer in God produce wicked ways and sinful deeds, and a wicked person does nothing that is considered righteous in the eyes of God.
If you believe, you believe in what God says about sin and sinners; the manifestation of faith in Jesus Chris: repentance and good works.
Every tree has seed in and of itself. We should be producing after our own kinds. Jesus came to destroy the works of the devil; all who sin is therefore not of the Father. As it is written.