Deuteronomy 3:17

3:17 The Arabah and the Jordan River were also a border, from the sea of Chinnereth to the sea of the Arabah (that is, the Salt Sea), beneath the watershed of Pisgah to the east.

Deuteronomy 3:27

3:27 Go up to the top of Pisgah and take a good look to the west, north, south, and east, for you will not be allowed to cross the Jordan.