Numbers 32:1

Reuben and Gad Settle in Gilead

1Now the people of Reuben and the people of Gad had a very great number of livestock. And they saw the land of aJazer and the land of Gilead, and behold, the place was a place for livestock.

Judges 10:8

8and they crushed and oppressed the people of Israel that year. For eighteen years they oppressed all the people of Israel who were beyond the Jordan in the land of the Amorites, which is in Gilead.
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