Any Jesuit worth his salt can 'prove' absolutely everything in the RCC doctrine. They have had centuries of very gifted minds to come up with the necessities and niceties of debate.
When we get past their aura of righteousness, we see the more literal, apparent, profound message of Jesus. So much of what we have received of Jesus's words, applied to our internal fashion of being in relation to the universe, open new vistas on life. True, this can be said of Buddha as well. There remains another quality to Jesus.
Personal revelation is the only way. To say there is no new revelation would be saying it has never existed. To insist that this or that person's personal revelation obligates being shared, or at worst forced upon, others is the point where belief becomes politics, with the military close at hand.
This is not to say that someone who has found resonance with a figure in the story is wrong or heretical. The images we must have in our minds are to be transcended as possible. So much more the external.
