In your opinion what causes christians to believe in Jesus

[Sheldon]

Or he did, and just doesn't understand it very well. 

Like someone constantly quoting Aristotle, while using known common logical fallacies. 

It's kind of cute when they try though. 

Lets not forget, we're talking about someone who has claimed to believe the earth is a few thousand years old, and becomes very reticent when you ask about miracles.

There is depth, and nuanced thinking, and then there is bullshit and word salad.

In this forum, John is largely playing the role of Christian apologist.

However, I do enjoy (and much prefer) him talking more about psychology.  I think of most of Christianity as being uninformed about psychology, so I am still looking forward to how he tries to reconcile them.

Whenever I have read any apologist trying to square free will (of any stripe), with an omniscient deity, it is usually a car crash of contradictions. The worst was an Islamic apologist who simply vacillated endlessly between two mutually exclusive claims. Usually (if they've thought it through) we get "omniscient lite".