'Phrat' in the Bible

turn ye and journey for you, and enter the mount of the Amorite, and unto all its neighbouring places, in the plain, in the hill-country, and in the low country, and in the south, and in the haven of the sea, the land of the Canaanite, and of Lebanon, unto the great river, the river Phrat;

every place on which the sole of your foot treadeth is yours; from the wilderness, and Lebanon, from the river, the river Phrat, even unto the farther sea is your border;