'Asylum' in the Bible

Anyone who accidentally kills someone can escape there; these cities will be a place of asylum from the avenger of blood.

“Then He shall be a sanctuary [a sacred, indestructible shelter for those who fear and trust Him];But to both the houses of Israel [both the northern and southern kingdoms—Israel and Judah, He will be] a stone on which to stumble and a rock on which to trip,A trap and a snare for the inhabitants of Jerusalem.