'Swear' in the Bible

but I say unto you, swear not at all; neither by the heaven, for it is the throne of God;

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

Woe unto you, ye blind guides, that 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, he is a debtor.

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

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

For when God made promise to Abraham, since he could swear by none greater, he sware by himself,

For men swear by the greater: and in every dispute of theirs the oath is final for confirmation.

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