Genesis 29: And Laban gave unto his daughter Leah Zilpah his maid
for an handmaid.
Genesis 30: When Leah saw that she had left bearing, she took Zilpah her maid, and gave her Jacob to wife.
Genesis 30: And Zilpah Leah's maid bare Jacob a second son.
Genesis 35: And the sons of Zilpah, Leah's handmaid; Gad, and Asher: these
are the sons of Jacob, which were born to him in Padanaram.
Genesis 37: These
are the generations of Jacob. Joseph,
being seventeen years old, was feeding the flock with his brethren; and the lad
was with the sons of Bilhah, and with the sons of Zilpah, his father's wives: and Joseph brought unto his father their evil report.
Genesis 46: These
are the sons of Zilpah, whom Laban gave to Leah his daughter, and these she bare unto Jacob,
even sixteen souls.