New Revised Standard Version
He also lived to the east as far as the beginning of the desert this side of the Euphrates, because their cattle had multiplied in the land of Gilead.

Contemporary English Version
and as far east as the desert just west of the Euphrates River. They needed this much land because they owned too many cattle to keep them all in Gilead.

New American Bible
toward the east they dwelt as far as the wilderness which extends from the Euphrates River, for they had much livestock in the land of Gilead.

Douay-Rheims Bible
And eastward he had his habitation as far as the entrance of the desert, and the river Euphrates. For they possessed a great number of cattle in the land of Galaad.

And eastward he had his habitation as far as the entrance of the desert, and the river Euphrates. For they possessed a great number of cattle in the land of Galaad.

unto the entering.

Euphrates.

1 Chronicles 18:3 At that time David defeated also Adarezer king of Soba of the land of Hemath, when he went to extend his dominions as far as the river Euphrates.

Genesis 2:14 And the name of the third river is Tigris: the same passeth along by the Assyrians. And the fourth river is Euphrates.

2 Kings 24:7 And the king of Egypt came not again any more out of his own country: for the king of Babylon had taken all that had belonged to the king of Egypt, from the river of Egypt, unto the river Euphrates.

Gilead.

1 Chronicles 5:16 And they dwelt in Galaad, and in Basan and in the towns thereof, and in all the suburbs of Saron, unto the borders.

1 Chronicles 26:31 And the chief of the Hebronites was Jeria according to their families and kindreds. In the fortieth year of the reign of David they were numbered, and there were found most valiant men in Jazer Galaad,

Genesis 31:23 And he took his brethren with him, and pursued after him seven days; and overtook him in the mount of Galaad.

Joshua 22:9 So the children of Ruben, and the children of Gad, and the half tribe of Manasses returned, and parted from the children of Israel in Silo, which is in Chanaan, to go into Galaad the land of their possession, which they had obtained according to the commandment of the Lord by the hand of Moses.

1 Kings 17:1 And Elias the Thesbite, of the inhabitants of Galaad, said to Achab: As the Lord liveth, the God of Israel, in whose sight I stand, there shall not be dew nor rain these years, but according to the words of my mouth.

because.

Joshua 22:8,9 He said to them: With much substance and riches, you return to your settlements, with silver and gold, brass and iron, and variety of raiment: divide the prey of your enemies with your brethren. . . .