Genesis 29:32-33
29:32 So Leah became pregnant and gave birth to a son. She named him Reuben, for she said, “The Lord has looked with pity on my oppressed condition. Surely my husband will love me now.”
29:33 She became pregnant again and had another son. She said, “Because the Lord heard that I was unloved, he gave me this one too.” So she named him Simeon.