Hence the term "hypothetical". That said, to paraphrase Voltaire - he won't mind - if JC didn't exist (and he almost certainly didn't) it would be necesary to invent him. I'm just entertaining a curiosity here.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'