'Murderer' in the Bible

You are of your father, the devil, and you want to do the desires of your father. He was a murderer from the beginning, and doesn't stand in the truth, because there is no truth in him. When he speaks a lie, he speaks on his own; for he is a liar, and its father.

But you denied the Holy and Righteous One, and asked for a murderer to be granted to you,

When the natives saw the creature hanging from his hand, they said one to another, "No doubt this man is a murderer, whom, though he has escaped from the sea, yet Justice has not allowed to live."

For let none of you suffer as a murderer, or a thief, or an evil doer, or a meddler in other men's matters.

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