'Oaths' in the Bible

Again, you have knowledge that it was said in old times, Do not take false oaths, but give effect to your oaths to the Lord:

But I say to you, Take no oaths at all: not by the heaven, because it is the seat of God;

And the king was sad; but because of his oaths and because of his guests, he gave the order for it to be given to her;

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