Most Christians aren't Christian?

Jesus says that many of his followers aren't going to heaven.

Read that again. Jesus didn't say atheists. Jesus said people who claimed to be his followers. He says they will be surprised because they thought they were doing everything right

We are saved by faith But faith in what? Many Christians misunderstand what's in the "what."

Please don't take my word for it. Just reflect on the Biblical passages I show you.