Numbers 35:19

“Behold, You have driven me this day from the face of the ground; and from Your face I will be hidden, and I will be a vagrant and a wanderer on the earth, and it will be that whoever finds me will kill me.”

“But if he did not lie in wait for him, but God let him fall into his hand, then I will appoint you a place to which he may flee.

“Now this is the case of the manslayer who may flee there and live: when he strikes down his friend without premeditation, not hating him previously—

“Speak to the sons of Israel, saying, ‘Designate the cities of refuge, of which I spoke to you by the hand of Moses,

These were the appointed cities for all the sons of Israel and for the sojourner who sojourns among them, that whoever strikes down any person unintentionally may flee there and not die by the hand of the avenger of blood until he stands before the congregation.

“And behold, the whole family has risen against your servant-woman, and they say, ‘Hand over the one who struck his brother, that we may put him to death for the life of his brother whom he killed, and destroy the heir also.’ Thus they will extinguish my coal which remains, so as to leave my husband neither name nor remnant on the face of the earth.”

Then she said, “Please let the king remember Yahweh your God, so that the avenger of blood will not continue to bring about ruin, so that they would not destroy my son.” And he said, “As Yahweh lives, not one hair of your son shall fall to the ground.”