Ye shall not swear falsely This is added to show how one sin draws on another, and that when men will lie for their own advantage, they will easily be induced to perjury. Profane the name By any unholy use of it. So it is an additional precept, thou shall not abuse my holy name by swearing either falsely or rashly.
Related Commentaries of Leviticus 19:12
Leviticus 19:12
12 And ye shall not swear by my name falsely, neither shalt thou profane the name of thy God: I am the LORD.