Ezekiel 47:8

47:8 He said to me, “These waters go out toward the eastern region and flow down into the Arabah; when they enter the Dead Sea, where the sea is stagnant, the waters become fresh.

Ezekiel 47:18

47:18 On the east side, between Hauran and Damascus, and between Gilead and the land of Israel, will be the Jordan. You will measure from the border to the eastern sea. This is the east side.