1 John 3:4

3:4 Everyone who practices sin also practices lawlessness; indeed, sin is lawlessness.

Deuteronomy 5:32

5:32 Be careful, therefore, to do exactly what the Lord your God has commanded you; do not turn right or left!

Deuteronomy 12:32

Idolatry and False Prophets

12:32 (13:1) You must be careful to do everything I am commanding you. Do not add to it or subtract from it!