'Swear an Oath' in the Bible

My master made me swear an oath. He said, 'You must not acquire a wife for my son from the daughters of the Canaanites, among whom I am living,

But Jacob said, "Swear an oath to me now." So Esau swore an oath to him and sold his birthright to Jacob.

My father made me swear an oath. He said, "I am about to die. Bury me in my tomb that I dug for myself there in the land of Canaan." Now let me go and bury my father; then I will return.'"

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."

As certainly as the Lord your God lives, my master has sent to every nation and kingdom in an effort to find you. When they say, 'He's not here,' he makes them swear an oath that they could not find you.

In the seventh year Jehoiada summoned the officers of the units of hundreds of the Carians and the royal bodyguard. He met with them in the Lord's temple. He made an agreement with them and made them swear an oath of allegiance in the Lord's temple. Then he showed them the king's son.