Or if a soul swear, pronouncing with his lips to do evil, or to do good, whatsoever it be that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.
Leviticus 19:12
And ye shall not swear by my name falsely, neither shalt thou profane the name of thy God: I am the LORD.