Deuteronomy 4:41-43 records Moses already setting apart three cities east of Jordan, serving as a model for the three in Canaan commanded here.

Exodus 21:13 first introduces a place of refuge for accidental killers; this command expands that concept into three designated cities.

Numbers 35:10-15 prescribes six cities of refuge in total; this command for three in Canaan aligns with that broader plan.

Joshua 20:2-7 records the fulfillment of this command, as Joshua designates the three cities west of Jordan.

Hebrews 6:18 uses the imagery of fleeing for refuge as a metaphor for our hope in Christ, echoing the OT cities of refuge.