This was an explicit correction of two disciples who went to Jesus expecting praise for sending away men casting out demons in His name “because they don’t follow US”
Jesus DOES NOT CARE who follows RnMomof7 or piusv. He said so Himself.
His criterion was, “do they follow me”? He rebuked his disciples for presuming to define who was and who wasn’t a Christian.
You are correct, and Jesus went even further - He gave a grave warning in the very next sentence:
Mark 9-42: “If anyone causes one of these little ones — those who believe in me — to stumble, it would be better for them if a large millstone were hung around their neck and they were thrown into the sea."
There are a lot of "Christians" in hell saying, "you was serious about that"?
Oh NO!
You mean the GWT judgment has occurred and I missed it?