'Oath' in the Bible

"Again, you have heard that it was said to an older generation, 'Do not break an oath, but fulfill your vows to the Lord.'

Do not take an oath by your head, because you are not able to make one hair white or black.

so much that he promised with an oath to give her whatever she asked.

Although it grieved the king, because of his oath and the dinner guests he commanded it to be given.

"Woe to you, blind guides, who say, 'Whoever swears by the temple is bound by nothing. But whoever swears by the gold of the temple is bound by the oath.'

And, 'Whoever swears by the altar is bound by nothing. But if anyone swears by the gift on it he is bound by the oath.'

But Jesus was silent. The high priest said to him, "I charge you under oath by the living God, tell us if you are the Christ, the Son of God."

He denied it again with an oath, "I do not know the man!"

At that he began to curse, and he swore with an oath, "I do not know the man!" At that moment a rooster crowed.