In your opinion what causes christians to believe in Jesus

[Angrboda]

'Faith' is one of those few dozen words that have more than one meaning. Having faith that flipping a switch will turn on the lights in the room isn't the same as having faith that Jesus is going to descend from the clouds and gather you to his bosom. One is a reasonable expectation based on experience, the other is magical thinking.

Boru

Exactly, and of course religious faith produces wildly differing religions, and beliefs in entirely different deities,  the Christian religion alone has over 45k different sects and denominations globally. 

This then shows that religious faith is merely an excuse people use, when they want to hold a subjective religious belief, and know that they cannot support that belief in any remotely objective way.

It's interesting how trust in different gods ends up being equally rewarded. It's almost like it has nothing to do with any actual god. Got an explanation for that, John?