Originally Posted by silverskater145

What you believe is of your own volition, but Biblically, the greatest sin is written in Matthew 12: 31-32:

"31 And so I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven.
32 Anyone who speaks a word against the Son of Man will be forgiven, but anyone who speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come."