Yes, "Judge not, lest you be judged". The same God will judge us all, and I've heard some sobering sermons that there will probably be a great deal of *disappointment* come Judgement Day among so-called Christians.
We are told to "Work out your own salvation with fear and trembling." I always took that to mean that you shouldn't be anticipating so much who else is going to hell, rather you should be worried that you might be.