'Swore' in the Bible

That is why he named that place Beer Sheba, because the two of them swore an oath there.

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

Then Joseph said to his brothers, "I am about to die. But God will surely come to you and lead you up from this land to the land he swore on oath to give to Abraham, Isaac, and Jacob."