Cross reference
Genesis 46:18
18 These are the children of Zilpah, whom Laban gave to his daughter Leah, and Jacob had these sixteen children by her.
Genesis 29:24
24 And Laban gave Zilpah, his servant-girl, to Leah, to be her waiting-woman.
Genesis 30:9-13
9 When it was clear to Leah that she would have no more children for a time, she gave Zilpah, her servant, to Jacob as a wife.
10 And Zilpah, Leah's servant, gave birth to a son.
11 And Leah said, It has gone well for me: and she gave him the name Gad.
12 And Zilpah, Leah's servant, gave birth to a second son.
13 And Leah said, Happy am I! and all women will give witness to my joy: and she gave him the name Asher.
Genesis 35:26
26 The sons of Zilpah, Leah's servant: Gad and Asher; these are the sons whom Jacob had in Paddan-aram.
Exodus 1:4
4 Dan and Naphtali, Gad and Asher.