Genesis 35:23
Leah's sons were Reuben (Jacob's first-born), Simeon, Levi, Judah, Issachar, and Zebulun.
Genesis 29:32-35
Leah conceived, bore a son, and named him Reuben, because she was saying, "The LORD had looked on my torture, so now my husband will love me."
Genesis 30:18-20
Then Leah said, "God has paid me for giving my servant to my husband as his wife." So she named him Issachar.
Genesis 46:8-15
Here's a list of the names of Israel's sons, that is, of Jacob and his sons who moved to Egypt: Reuben, Jacob's firstborn;
Genesis 33:2
Then he positioned the women servants and their children first, then Leah and her children next, and then Rachel and Joseph after them.
Exodus 1:2-4
Reuben, Simeon, Levi, Judah,
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