Bible Verses About Oaths: Antiquity of

But Avram answered the king of S'dom, "I have raised my hand in an oath to ADONAI, El 'Elyon, maker of heaven and earth,

because I want you to swear by ADONAI, God of heaven and God of the earth, that you will not choose a wife for my son from among the women of the Kena'ani, among whom I am living;

But if the woman is unwilling to follow you, then you are released from your obligation under my oath. Just don't bring my son back there."