Luke 11:51
from the blood of Abel down to the blood of Zechariah who was slain between the altar and the House of God ??yes, I tell you, it will all be charged upon this generation.
John 8:44
You belong to your father the devil, and you want to do what your father desires; he was a slayer of men from the very beginning, and he has no place in the truth because there is no truth in him: when he tells a lie, he is expressing his own nature, for he is a liar and the father of lies.
1 John 3:10
Here is how the children of God and the children of the devil are recognized; anyone who does not practise righteousness does not belong to God, and neither does he who has no love for his brother.
1 John 3:12
we are not to be like Cain, who belonged to the evil One and slew his brother. And why did he slay him? Because his own deeds were evil and his brother's just.
1 John 3:15
Anyone who hates his brother is a murderer, and you know that no murderer has eternal life remaining within him.