I think about this and Matthew 7:21-23, where we see someone who thought they knew and were known by God but were not. Can there be a greater error, than that?

That is very true. It seems that every church always thinks it's everybody else who is wrong, like it is always "the other guy." However, it is worth noting, that to everybody else, we are the "other guy!"

Thank you for your prayer too! It means a lot.