Hmm, Perfect means incapable of making a mistake, completely free of faults or defects. So unless, you know a person who has passed every test with 100 percent, never made a spelling mistake, never mispoke, never forgot anything, has always heard everything correctly, etc. There are no perfect human beings in my book, because the senses themselves are fallible. We can only do the best we can do in all instances.
I think that if anyone in any religious tradition think themself perfect, then they should not need that religion, and they should start one on their own and see how far they get.