'Take an Oath' in the Bible

So they said, "We will restore it and will not request [anything more]. So we will do as you say." Then I called the priests and made them take an oath to do this promise.

So I quarreled with them and cursed them and beat some of their men and pulled out their hair. I made them take an oath by God: "Do not give your daughters to their sons or take their daughters for your sons or for yourselves.