Genesis 46:18

46:18 These were the sons of Zilpah, whom Laban gave to Leah his daughter. She bore these to Jacob, sixteen in all.

Genesis 46:26

46:26 All the direct descendants of Jacob who went to Egypt with him were sixty-six in number. (This number does not include the wives of Jacob’s sons.) ¹ 

[46:26]  ¹ tn Heb “All the people who went with Jacob to Egypt, the ones who came out of his body, apart from the wives of the sons of Jacob, all the people were sixty-six.”