'Swear' in the Bible

But I say unto you, Do not swear at all; neither by the heaven, because it is the throne of God;

Neither shalt thou swear by thy head, because thou canst not make one hair white or black.

Woe to you, blind guides, who say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is a debtor.

And, Whosoever shall swear by the altar, it is nothing; but whosoever shall swear by the gift that is upon it is a debtor.

Then he began to curse and to swear, I know not the man. And immediately the cock crew.

But he began to curse and to swear, I know not this man of whom ye speak.

For God, having promised to Abraham, since he had no greater to swear by, swore by himself,

For men indeed swear by a greater, and with them the oath is a term to all dispute, as making matters sure.

But before all things, my brethren, swear not, neither by heaven, nor by the earth, nor by any other oath; but let your yea be yea, and your nay, nay, that ye do not fall under judgment.