Numbers 13:2-26 is the account of sending the twelve spies, the very event Moses refers to in Numbers 32:8 as a warning.

Numbers 14:2 shows the people grumbling after the spies' bad report, the consequence Moses warns against repeating.

Numbers 13:3 describes Moses sending the spies from Paran, the same event referenced in Numbers 32:8.

Numbers 13:26 reports the spies' return to Kadesh, the location and event Moses alludes to in Numbers 32:8.

Deuteronomy 1:22 recounts the people's request to send spies, the same event Moses references in Numbers 32:8.

Deuteronomy 1:23 records Moses selecting twelve spies, directly parallel to the sending mentioned in Numbers 32:8.

Joshua 14:6 has Caleb recall the same spies' mission at Kadesh-barnea, reinforcing the event Moses warns about.

Joshua 14:7 gives Caleb's personal testimony of being sent as a spy, directly echoing Numbers 32:8.

Deuteronomy 1:34 records God's angry oath against the unbelieving generation, the direct consequence of the fathers' discouragement Moses mentions here.