Genesis 49:3
"Reuben, thou art mine eldest son, my might and the beginning of my strength, chief in receiving and chief in power.
Deuteronomy 21:17
But he shall know the son of the hated for his firstborn, that he give him double of all that he hath. For he is the first of his strength, and to him belongeth the right of the firstbornship.
Genesis 29:32
And Lea conceived and bare a son, and called his name Reuben, for she said, "The LORD hath looked upon my tribulation. And now my husband will love me."
Psalm 78:51
When he smote all the firstborn in Egypt, the most principal and mightiest in the dwellings of Ham.
Psalm 105:36
He smote all the firstborn in their land, even the chief of all their strength.
Genesis 46:8
These are the names of the children of Israel which came into Egypt, both Jacob and his sons: Reuben, Jacob's first son.
Genesis 48:18
and said unto his father, "Not so my father, for this is the eldest. Put thy righthand upon his head."
Numbers 1:20
And the children of Reuben, Israel's eldest son, in their generations, kindreds and houses of their fathers - when they were numbered every man by name, all that were males from twenty years and above, as many as were able to go forth in war -
Numbers 26:5
Reuben, the eldest son of Israel. The children of Reuben were, Hanoch, of whom cometh the kindred of the Hanochites; and of Pallu, cometh the kindred of the Palluites;
1 Chronicles 2:1
These be the sons of Israel: Reuben, Simeon, Levi, Judah, Issachar and Zebulun;
1 Chronicles 5:1
The sons of Reuben, the eldest son of Israel: for he was the eldest. But because he defied his father's bed, his birthright was given unto the sons of Joseph, the son of Israel, and so he is not reckoned unto the birthright.
1 Chronicles 5:3
The sons then of Reuben the eldest son of Israel, were Hanoch, Pallu, Hezron and Carmi.