Luke 11:51
from the blood of Abel to the blood of Zechariah, who perished between the altar and the sanctuary. Yes, I tell you, it shall be required of this generation.
John 8:44
You are of your father the devil, and you want to do your father's desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks according to his own nature, for he is a liar and the father of lies.
1 John 3:10
By this it may be seen who are the children of God, and who are the children of the devil: whoever does not do right is not of God, nor he who does not love his brother.
1 John 3:12
and not be like Cain who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother's righteous.
1 John 3:15
Anyone who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him.