Luke 11:51
From the blood of Abel to the blood of Zechariah, who was destroyed between the temple and the altar: verily I say to you, it shall be required of this generation.
John 8:44
Ye are of your father the devil, and your will is, to do the desires of your father. He was a murderer from the beginning, and abode not in the truth; for there is no truth in him. When he speaketh a lie, he speaketh of his own; for he is a liar, and the father of it.
1 John 3:10
Hereby the children of God are manifest and the children of the devil: whosoever practiseth not righteousness is not of God; neither he that loveth not his brother.
1 John 3:12
Not as Cain, who was of the wicked one, and slew his brother.
1 John 3:15
Whosoever hateth his brother is a murtherer, and ye know that no murtherer hath eternal life abiding in him.