'Oath' in the Bible

“Again, you have heard that it was said to our ancestors, You must not break your oath, but you must keep your oaths to the Lord.

But I tell you, don’t take an oath at all: either by heaven, because it is God’s throne;

Nor shall you make an oath by your head, for you cannot make one hair white or black.

Whereupon he promised with an oath to give her whatsoever she would ask.

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 takes an oath by the sanctuary, it means nothing. But whoever takes an oath by the gold of the sanctuary is bound by his oath.’

Also, ‘Whoever takes an oath by the altar, it means nothing. But whoever takes an oath by the gift that is on it is bound by his oath.’

Therefore, the one who takes an oath by the altar takes an oath by it and by everything on it.

The one who takes an oath by the sanctuary takes an oath by it and by Him who dwells in it.

And the one who takes an oath by heaven takes an oath by God’s throne and by Him who sits on it.

But Jesus kept silent. Then the high priest said to Him, “By the living God I place You under oath: tell us if You are the Messiah, the Son of God!”

And again he denied with an oath, I do not know the man.

Then he started to curse and to swear with an oath, “I do not know the man!” Immediately a rooster crowed,