Cross reference
Ezra 4:16
16 We inform the king that, if this city be built, and the walls finished, by this means you shall have no portion beyond the River.
2 Samuel 8:3
3 David struck also Hadadezer the son of Rehob, king of Zobah, as he went to recover his dominion at the River.
1 Kings 4:24
24 For he had dominion over all [the region] on this side the River, from Tiphsah even to Gaza, over all the kings on this side the River: and he had peace on all sides round about him.
Ezra 4:20
20 There have been mighty kings also over Jerusalem, who have ruled over all [the country] beyond the River; and tribute, custom, and toll, was paid to them.