In your opinion what causes christians to believe in Jesus

[Sheldon]

Again he demands that discussion must happen on his terms, which is really not discussion.

He also been asked repeatedly to offer any good reasons for his trust / faith, and he has refused. The obvious inference is he suspects they are not objectively good reasons, so he is attempting to project his subjective bias, rather than have it subjected to critical scrutiny. 

Who knows what he hopes to gain from this, but I'd bet my house his refusal will somehow turn out to be the fault of the atheists here, he has started the ball rolling of course, with the asinine assertion that it is pointless to share his "good" reasons, unless we accept a priori and without any evidence that a deity is possible. 

My best bet, is that this will be dishonestly portrayed as bias before the end. ironic really...if unevidenced subjective faith isn't bias, what is? After all you could literally believe anything using religious faith. If @John 6IX Breezy thought that what he is peddling here, was supported by any remotely objective evidence, he'd have had it in a  thread title, and be shouting it from the roof tops, so to speak. This is why religions cloak their snake oil in mystery, to avoid the critically objective analysis that will demonstrate they're holding an empty bag.