'Swear to Me' in the Bible

Swear to me by God here and now, that you will not break an agreement with me or with my children and descendants. As I have been loyal to you, so you will be loyal to me and to the country where you are a foreign resident.”

Jacob said, “Swear to me first.” So he swore to Jacob and sold his birthright to him.

And Jacob said, “Swear to me.” So Joseph swore to him. Then Israel bowed in thanks at the head of his bed.