>>19030408Most religious authorities consider "blasphemy against the holy spirit" to be attributing the works of god to satan. That is you would need to see a miracle happen and then attribute the miracle to satan. Or the consider it to be dying in sin (and therefore confounding the work of the holy spirit). Depending on the religious authority.
The first case is very hard to do nowadays and you probably haven't done it. The second case can be gotten rid of by repenting. You are probably still fine if you become christian again.
