Genesis 29:31-34

When YAHWEH saw that Leah was unloved, he opened her womb, but Rachel remained childless. Leah conceived, gave birth to a son, and named him Reuben, saying, “Because YAHWEH looked upon me with compassion in my misery, surely, my husband will love me now!” She conceived again, gave birth to a son, and named him Simeon, saying, “YAHWEH has heard that I am despised, and in his mercy, he has given me this son also.” Leah conceived the third time, gave birth to a son, and named him Levi, saying, “This time my husband will be joined to me, because now I’ve given him three sons!”