'Oath' in the Bible

And when the people were come unto the forest, behold, the honey dropped: but no man put his hand to his mouth; for the people feared the oath.

But Jonathan heard not when his father charged the people with the oath: wherefore he put forth the end of the rod that was in his hand, and dipped it in the honeycomb, and put his hand to his mouth; and his eyes were enlightened.

Then answered one of the people, and said, Thy father straitly charged the people with an oath, saying, Cursed be the man that eateth food this day. And the people were faint.