Genesis 35:23
Now Jacob had twelve sons: the sons of Leah: Reuben, Jacob's first son, and Simeon and Levi and Judah and Issachar and Zebulun;
Genesis 29:32-35
And Leah was with child, and gave birth to a son to whom she gave the name Reuben: for she said, The Lord has seen my sorrow; now my husband will have love for me.
Genesis 30:18-20
Then Leah said, God has made payment to me for giving my servant-girl to my husband: so she gave her son the name Issachar.
Genesis 46:8-15
And these are the names of the children of Israel who came into Egypt, even Jacob and all his sons: Reuben, Jacob's oldest son;
Genesis 33:2
He put the servants and their children in front, Leah and her children after them, and Rachel and Joseph at the back.
Exodus 1:2-4
Reuben, Simeon, Levi, and Judah;
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