'Take an Oath' in the Bible

Come now, go to King David and say to him, Did you not, O my lord, take an oath to me, your servant, saying, Truly Solomon your son will be king after me, seated on the seat of my kingdom? why then is Adonijah acting as king?

Then the king sent for Shimei, and said to him, Did I not make you take an oath by the Lord, protesting to you and saying, Be certain that on the day when you go out from here, wherever you go, death will overtake you? and you said to me, Very well!

If a man does wrong to his neighbour, and has to take an oath, and comes before your altar to take his oath in this house:

By the life of the Lord your God, there is not a nation or kingdom where my lord has not sent in search of you; and when they said, He is not here; he made them take an oath that they had not seen you.