'Swear to Me' in the Bible

now therefore, swear to me here by God that you will not deal falsely with me or with my offspring or with my posterity, but according to the kindness that I have shown to you, you shall show to me and to the land in which you have sojourned.”

And Jacob said, “First swear to me”; so he swore to him, and sold his birthright to Jacob.

He said, “Swear to me.” So he swore to him. Then Israel bowed in worship at the head of the bed.