Genesis 29:32-34

32Leah became pregnant and gave birth to a son. She named him Reuben, Reuben sounds like the Hebrew for he has seen my misery; the name means see, a son. for she said, “It is because the LORD has seen my misery. Surely my husband will love me now.”

33She conceived again, and when she gave birth to a son she said, “Because the LORD heard that I am not loved, he gave me this one too.” So she named him Simeon. Simeon probably means one who hears.

34Again she conceived, and when she gave birth to a son she said, “Now at last my husband will become attached to me, because I have borne him three sons.” So he was named Levi. Levi sounds like and may be derived from the Hebrew for attached.