Genesis 46:18

New King James Version

These were the sons of Zilpah, whom Laban gave to Leah his daughter; and these she bore to Jacob: sixteen persons.

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And Laban gave his maid Zilpah to his daughter Leah as a maid.

Dan, Naphtali, Gad, and Asher.

and the sons of Zilpah, Leah’s maidservant, were Gad and Asher. These were the sons of Jacob who were born to him in Padan Aram.

The sons of Asher were Jimnah, Ishuah, Isui, Beriah, and Serah, their sister. And the sons of Beriah were Heber and Malchiel.

The sons of Rachel, Jacob’s wife, were Joseph and Benjamin.