Deuteronomy 33:6

Let Reuben live and not die, and let not his men be few.

Reuben, thou art my firstborn, my might, and the beginning of my strength, principal in dignity, and the principal in power.

Judah, thou art he whom thy brethren shall praise; thy hand shall be on the neck of thine enemies; thy father's sons shall bow down before thee.

And the sons of Gad and the sons of Reuben answered, saying, As the LORD has said unto thy slaves, so will we do.

Then Joshua called the Reubenites and the Gadites and the half tribe of Manasseh

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Let Reuben live, and not die; and let not his men be few.

Reuben, thou art my firstborn, my might, and the beginning of my strength, principal in dignity, and the principal in power.

And the sons of Gad and the sons of Reuben answered, saying, As the LORD has said unto thy slaves, so will we do.

Then Joshua called the Reubenites and the Gadites and the half tribe of Manasseh