Genesis 30:4-13

So Rachel gave Bilhah, her slave girl, to Jacob as a wife, and he had sexual relations with her. She became pregnant and gave Jacob a son. Rachel said, “God has judged me innocent. He has listened to my prayer and has given me a son,” so she named him Dan. Bilhah became pregnant again and gave Jacob a second son. Rachel said, “I have struggled hard with my sister, and I have won.” So she named that son Naphtali. Leah saw that she had stopped having children, so she gave her slave girl Zilpah to Jacob as a wife. When Zilpah had a son, Leah said, “I am lucky,” so she named him Gad. Zilpah gave birth to another son, and Leah said, “I am very happy! Now women will call me happy,” so she named him Asher.