Luke 11:51

from the blood of Abel to the blood of Zachariah, who perished between the altar and the temple; yes, I say to you, It shall be required of this generation.

John 8:44

You are of your father, the devil; and the desires of your father you will do. He was a murderer from the be ginning, and stood not in the truth, because there is no truth in him. When he speaks that which is false, he speaks from what is his own; for he is a liar, and the father of it.

1 John 3:10

By this the children of God are manifest, and the children of the devil. Whoever does not work righteousness is not of God; neither is he that loves not his brother.

1 John 3:12

Not as Cain, who was of the wicked one, and slew his brother: and for what reason did he slay him? because his own works were evil, and his brother s, righteous.

1 John 3:15

Whoever hates his brother, is a murderer: and you know that no murderer has eternal life abiding in him.

Treasury of Scripture Knowledge

Summary

And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground.

Bible References

A keeper

John 8:44
You are of your father, the devil; and the desires of your father you will do. He was a murderer from the be ginning, and stood not in the truth, because there is no truth in him. When he speaks that which is false, he speaks from what is his own; for he is a liar, and the father of it.
1 John 3:10
By this the children of God are manifest, and the children of the devil. Whoever does not work righteousness is not of God; neither is he that loves not his brother.