'Beyond the River' in the Bible

Moreover I said to the king, If it please the king, let letters be given to me to the governors beyond the River, that they may let me pass through till I come to Judah,

Then I came to the governors beyond the River, and gave them the king's letters. Now the king had sent with me captains of the army and horsemen.

And next to them Melatiah the Gibeonite, and Jadon the Meronothite, the men of Gibeon, and of Mizpah, [who pertained] to the throne of the governor beyond the River, repaired.