Genesis 25:33

some immoral or godless person like Esau, who sold his own birthright for a single meal.

And he promised her on oath, "I will give you anything you ask for, up to half of my kingdom."

For it is a custom among men to take oath by something greater than themselves, and an oath taken for confirmation settles any dispute among them.

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 promised her on oath, "I will give you anything you ask for, up to half of my kingdom."

For it is a custom among men to take oath by something greater than themselves, and an oath taken for confirmation settles any dispute among them.

some immoral or godless person like Esau, who sold his own birthright for a single meal.