'Oaths' in the Bible

Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:

But I say to you, do not take oaths at all -- not by heaven, because it is the throne of God,

Although the king regretted it, he commanded that it be granted because of his oaths and his guests.

Then with curses and oaths he said, I have no knowledge of the man. And straight away there came the cry of a cock.