So, apparently, denouncing (or maybe just speaking against) the holy spirit/ghost is an unpardonable sin in Christianity (or at least one denomination). So, if I wear a shirt saying, "I denounce the Holy Spirit," will no Christians ever try to convert me ever? That's pretty nice of the guys...
Exodus 20:7
"Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain."
Deuteronomy 5:11
Thou shalt not take the name of the LORD thy God in vain: for the LORD will not hold him guiltless that taketh his name in vain...