But you don't have any support for one sin being greater than another. In fact, liers are lumped in with murderers in several passages.
How do you determine what is or is not a greater sin?
All sin is sin.
No support?
Mark 9:42:And whosoever shall cause one of these little ones that believe on me to stumble, it were better for him if a great millstone were hanged about his neck, and he were cast into the sea.
Is there any greater condemnation that Jesus ever gave?
No.
Surely these people will go to hell, if they do not ask God's forgiveness.