So a newly ordained Priest and a Rabbi are talking, and the rabbi asks “So what is the next step?”
To which the priest replies “well it doesn’t necessarily work that way, but I suppose I could be ordained Bishop”
Rabbi: "And whats the next step after that?
Priest: “There really isn’t one, a bishop is the completion of Holy Orders, but I could be appointed as archbishop”
Rabbi: “and then?”
Priest: “Cardinal I suppose, but I would still just be a bishop”
Rabbi “And after that?”
Priest “I guess being elected Pope, but really, I am still just a bishop”
Rabbi: “What comes after that?”
Priest “well theres nothing above the Pope”
Rabbi: “surely there is something”
Priest: “what do you want, me to become God?”
Rabbi: “Well, one of our guys made it”

Just a joke that relates pretty well to the idea of the topic