The unforgivable sin is rejection of Jesus Christ, Our Lord.
Everything else can be forgiven whether it be a killing spree or stealing a nickel from a register.
I apologize to the OP and the Madbunny for going off topic here, but I am so shocked by this statement.
So your god does not really care about sin or evil or even following his complex and confusing rules? He doesn't care which human beings are good, and which are evil?
ALL he wants is to be worshipped?
That is it?
He does not sound like a very nice god. WHY would you worship him if he stands for nothing but his own adoration?