Whoever strikes and kills a man must surely be put to death.

Matthew 26:52
"Put your sword back in its place," Jesus said to him. "For all who draw the sword will die by the sword.

Genesis 9:5
And surely I will require the life of any man or beast by whose hand your lifeblood is shed. I will demand an accounting from anyone who takes the life of his fellow man:

Genesis 9:6
Whoever sheds the blood of man, by man his blood will be shed; for in His own image God has made mankind.

Exodus 20:13
You shall not murder.

Exodus 21:11
If, however, he does not provide her with these three things, she is free to go without monetary payment.

Leviticus 24:17
And if a man takes the life of anyone else, he must surely be put to death.

Numbers 35:16
If, however, anyone strikes a person with an iron object and kills him, he is a murderer; the murderer must surely be put to death.

Numbers 35:30
If anyone kills a person, the murderer is to be put to death on the testimony of the witnesses. But no one is to be put to death based on the testimony of a lone witness.

Deuteronomy 19:11
If, however, a man hates his neighbor and lies in wait, attacks him and kills him, and then flees to one of these cities,

Deuteronomy 27:24
Cursed is he who strikes down his neighbor in secret.' And let all the people say, 'Amen!'

He that smites a man, so that he die, shall be surely put to death.