'Swear' in the Bible

But I say unto you, Swear not at all; neither by heaven; for it is God's throne:

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

Woe unto you, ye blind guides, which 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 sweareth by the gift that is upon it, he is guilty.

Whoso therefore shall swear by the altar, sweareth by it, and by all things thereon.

And whoso shall swear by the temple, sweareth by it, and by him that dwelleth therein.

And he that shall swear by heaven, sweareth by the throne of God, and by him that sitteth thereon.

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

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

For when God made promise to Abraham, because he could swear by no greater, he sware by himself,

For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.

But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation.