Swearing and making vows in the name of God or anything else is a sin. Let whatever you say be binding by your words and not by vows. Do everything you say you will do by meaning it, without necessarily making vows or swearing.

I have seen many instances where people swear just to make their words stand before the hearer or listener. Maybe I have been guilty of this in the past when I was not enlightened. This again is why I always emphasize that people should study their bible all the time; it is the only true way of life![http://www.ackcity.net/let-your-yes-be-yes]