hold Mr. Donny, Jesus was certainly not a liar or a madman. and the reason why the aposles were preaching the Gosple was because simply they were inspired by the Holy Spirit. How do I know? if you look at the situation all 11 of aposles were dead scared,so much that they wouldn't leave their room. And suddenly out of nowhere all of them gain the courage and the ablity to preach despite of it being dangerous. All that i'm saying is that definetly happened there or else there would be Christianty.
good question though