Exodus 21:14
But if a man schemes and acts willfully against his neighbor to kill him, you must take him away from My altar to be put to death.

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 19:13
You must show him no pity. You are to purge from Israel the guilt of shedding innocent blood, that it may go well with you.

2 Samuel 14:7
Now the whole clan has risen up against your maidservant and said, 'Hand over the one who struck down his brother, that we may put him to death for the life of the brother whom he killed. Then we will cut off the heir as well!' So they would extinguish my one remaining ember by not preserving my husband's name or posterity on the earth."