Genesis 4:7 If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door. And unto thee shall be his desire, and thou shalt rule over him.

Imagine two friends in a class. One dedicate his time and effort to his education by studying every now and then to see that he obtain a good grade. And the other friend feel it's not necessary, But any time the teacher ask questions in the class the serious friend answer...