Numbers 32:8

8 Your ancestors did the same thing when I sent them from Kadesh-barnea to explore the land.

Numbers 32:8 Meaning and Commentary

Numbers 32:8

Thus did your fathers
Meaning not particularly and only the fathers of these two tribes he was speaking to, but of them and the other tribes also, who acted much such a part; did not choose to go into the good land to possess it, when they were bid to do it, but were for sending spies first, which brought an ill report of it, and discouraged the people from going into it; the history of which Moses here gives:

when I sent them from Kadeshbarnea to see the land;
called only Kadesh, ( Numbers 13:26 ) the reason of the name (See Gill on Numbers 32:13).

Numbers 32:8 In-Context

6 “Do you intend to stay here while your brothers go across and do all the fighting?” Moses asked the men of Gad and Reuben.

7 “Why do you want to discourage the rest of the people of Israel from going across to the land the LORD has given them?

8 Your ancestors did the same thing when I sent them from Kadesh-barnea to explore the land.

9 After they went up to the valley of Eshcol and explored the land, they discouraged the people of Israel from entering the land the LORD was giving them.

10 Then the LORD was very angry with them, and he vowed,