Like a Jehovah's Witness being a phlebotomist

Here's the latest example of a really bizarre condition: A cleric of some sort who denies God. In this instance, it's a Catholic priest denying that Jesus was God and human at the same time on earth. And that Mary was a virgin when Jesus was conceived. And that the resurrection actually happened.

So why would you claim Christianity and become a leader in your denomination if you don't believe the basic tenets of the faith are true? What's the point? I am flummoxed. It's not as if there aren't a lot of other jobs he could do that aren't based on faith. The fundamental dishonesty of his entire life is breathtaking.

I'm genuinely puzzled.