GENESIS 2:10, 14 (KJV)

¹⁰And a river went out of Eden to water the garden; and from thence it was parted, and became into four heads.

¹⁴And the name of the third river is Hiddekel: that is it which goeth toward the east of Asshur. And the fourth river is Perat.

GENESIS 15:18-21 (KJV)

¹⁸In the same day YHVH made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Mizrayim unto the great river, the river Perat: ¹⁹The Qini, and the Qenizi, and the Qadmoni, ²⁰And the Hiti, and the Perizzi, and the Rephaim, ²¹And the Amori, and the Kana’ani, and the Girgashi, and the Yebusi.