Does religion ___ have any unforgivable sins?

[davidwr]

Let's develop a list of religions, sects, denominations, and other groups that have "unforgivable sins."

[Edit] Oops, I didn't check that "Non-Christian Religions and Philosophies" is in a debate section. I can't find an appropriate discussion forum for this. Would the first administrator to see this be kind enough to move it to the most-appropriate forum? Thanks.

[jaysus]

Is there a mortal sin or sort of commandment that says you should not be untrue to yourself ?

ie, be true to yourself, be genuine, do not speak falsehoods that you feel to be uncorroborated ?