Genesis 29:24
And Laban gave unto his daughter Lea, Zilpah his maid, to be her servant.
Genesis 30:9-12
When Lea saw that she had left bearing, she took Zilpah her maid, and gave her Jacob to wife.
Genesis 16:1
Sarai, Abram's wife, bare him no children. But she had a handmaid, an Egyptian, whose name was Hagar.
Genesis 24:59
Then they brought Rebekah their sister on the way, and her nurse, and Abraham's servant, and the men that were with him.
Genesis 46:18
These are the children of Zilpah whom Laban gave to Lea his daughter. And these she bare unto Jacob in number sixteen souls.