'Beyond the River' in the Bible

Then I said to the king, "If it is good for the king, let letters be given to me for the governors [in the province] Beyond the River, that they may let me pass until I come to Judah.

I came to the governors of [the province] Beyond the River, and I gave them the letters of the king. Then the king sent troop commanders and horses with me.

{Next to them} Melatiah the Gibeonite and Jadon the Meronothite, the men of Gibeon and Mizpah who were under the rule of the governor of [the province] Beyond the River, repaired.