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 will be charged against the men of this age.
John 8:44
You sprang from the devil, your real father, and you want to practice your father's wishes. He was a murderer from the very start, and he does not stand by the truth, because there is no truth in him. When he tells a lie, he speaks out of his own nature, because he is a liar and the father of lies.
1 John 3:10
This is the way to distinguish God's children from the devil's children. No one who fails to do right is God's child, and no one who fails to love his brother.
1 John 3:12
We must not be like Cain who belonged to the evil one and butchered his brother. And why did he butcher him? Because his own actions were wicked and his brother's upright.
1 John 3:15
Anyone who keeps on hating his brother is a murderer; and you know that no murderer can have eternal life remaining in him.