Genesis 22:16

22:16 and said, “‘I solemnly swear by my own name,’ decrees the Lord, ‘that because you have done this and have not withheld your son, your only son,

Genesis 25:33

25:33 But Jacob said, “Swear an oath to me now.” So Esau swore an oath to him and sold his birthright to Jacob.

Genesis 47:31

47:31 Jacob said, “Swear to me that you will do so.” So Joseph gave him his word. Then Israel bowed down at the head of his bed.

Genesis 50:25

50:25 Joseph made the sons of Israel swear an oath. He said, “God will surely come to you. Then you must carry my bones up from this place.”