Numbers 32:8 directly cites this event: 'Your fathers did this when I sent them from Kadesh-barnea to see the land.' It's a later reference to the spy mission.

Deuteronomy 1:22-25 gives the parallel account: the people request spies, Moses agrees, and the spies bring fruit. It's the same story from Deuteronomy.

Joshua 18:4 sends three men per tribe to survey the land — a similar commission to explore and describe the land for inheritance.

Joshua 2:1-24 is a later spy mission to Jericho. It parallels the pattern here but serves military purposes under Joshua, with a different outcome.