Genesis 30:9-13

When Leah saw that she had stopped having children, she took her slave Zilpah and gave her to Jacob as a wife.

And Leah’s slave Zilpah bore Jacob a son.

Then Leah said, “How fortunate!” So she named him Gad.

And Leah’s slave Zilpah bore Jacob a second son.

Then Leah said, “Happy am I! For women will call me happy.” So she named him Asher.