Bible Verses About Murder: Should warn others against

Reuben said to them, “Shed no blood. Throw him into this pit that is in the wilderness, but lay no hand on him”—that he might deliver him out of their hand, to restore him to his father.

Only know for certain that, if you put me to death, you will bring innocent blood on yourselves, and on this city, and on its inhabitants; for of a truth the LORD has sent me to you to speak all these words in your ears.