Rom. 14:23 – Everything not of faith is sin.
James 4:17 – He who knows to do good and doesn’t.
1 Jn. 3:4 – Transgression of the law.
1 Jn. 5:17 – All unrighteousness is sin.
Prov. 24:9 – The thought of foolishness is sin. Thought – Zammah – A plan, espec. A bad one; heinous crime, lewd (ly, ness), mischief, purpose, thought, wicked (device, mind, -ness)