Genesis 25:33

lest there be any fornicator, or profane person, as Esau, who for one morsel of bread parted with his birthrights.

And he swore unto her, That whatsoever thou shalt ask, I will give thee, even to the half of my kingdom.

For men indeed swear by something greater than themselves; and an oath for confirmation is with them conclusive in all disputes.

Treasury of Scripture Knowledge

And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob.

And he swore unto her, That whatsoever thou shalt ask, I will give thee, even to the half of my kingdom.

For men indeed swear by something greater than themselves; and an oath for confirmation is with them conclusive in all disputes.

lest there be any fornicator, or profane person, as Esau, who for one morsel of bread parted with his birthrights.