Numbers 35:6
And the cities which you shall give to the Levites shall be the six cities of refuge, which you shall give for the manslayer to flee to; and besides them you shall give forty-two cities.
Footnote on “cities”
The cities of refuge typify the all-inclusive Christ as the embodiment of the redeeming God, into whom mistaken sinners can flee for refuge. Christ was delivered by God into the hands of sinners, who mistakenly put Him to death. If any sinner repents, God will regard him as a mistaken sinner and will forgive him. Such a one may flee into Christ. But if anyone refuses the gospel and does not repent, God will regard him as a willful sinner, one who is destined to perish.