TSK · Genesis 31:48

He took his relatives with him, and pursued after him seven days' journey. He overtook him in the mountain of Gilead.

To the Reubenites and to the Gadites I gave from Gilead even to the valley of the Arnon, the middle of the valley, and the border [of it], even to the river Jabbok, which is the border of the children of Ammon;

but it will be a witness between us and you, and between our generations after us, that we may perform the service of Yahweh before him with our burnt offerings, with our sacrifices, and with our peace offerings;' that your children may not tell our children in time to come, 'You have no portion in Yahweh.'

The children of Reuben and the children of Gad named the altar "A Witness Between Us that Yahweh is God."

After him arose Jair, the Gileadite; and he judged Israel twenty-two years.