Bro, blaspheme or the Holy Ghost goes deeper then what we do with our tongue. So deep that it goes down to our hearts. To blaspheme the Holy Ghost is to die without Him in you and Jesus as your savior. There is only one way to get the Holy Spirit to dwell in you, that is through repentance and trusting alone in Jesus. You will be able to tell you are saved through you fruit (your work's). Jesus said "by their fruits, you will know them" and "A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another.35 By this shall all men know that ye are my disciples, if ye have love one to another."