Genesis 30:9-13

When Leah saw that she had ceased bearing children, she took her servant Zilpah and gave her to Jacob as a wife. Then Leah’s servant Zilpah bore Jacob a son. And Leah said, “Good fortune has come!” so she called his name Gad. Leah’s servant Zilpah bore Jacob a second son. And Leah said, “Happy am I! For women have called me happy.” So she called his name Asher.