Bible Verses About Motive: Sinful, illustrated by Cain

If you are doing what is good, shouldn’t you hold your head high? And if you don’t do what is good, sin is crouching at the door — it wants you, but you can rule over it.”

and not be like Kayin, who was from the Evil One and murdered his own brother. Why did he murder him? Because his own actions were evil, and his brother’s were righteous.