This question just came in, and it's a good one.
"How could Judas Iscariot, a first hand observer, have discredited all he saw. I feel like seeing first hand miricles and healings and teachings would have convinced me. Shouldn’t Jesus have been able to convince even the most doubtful? I guess in a way he did because he killed himself and must have been out of guilt. I’m not sure what the ultimate question is here."
This is a really great question because it deals with a false notion. I've been told by a number of atheists that, "if God would simply reveal himself, they would believe."
Although this sounds reasonable, Jesus disagrees.
Jesus told a story recorded in Luke 16:19-31. It's usually called Lazarus and the Rich man. In it Jesus tells of a rich man who refused to believe during his life. While in Hades, the rich man looks up and sees Lazarus and Abraham in paradise. Jesus relays a conversation between the two. The rich man begs Abraham for help. He says,
"Father Abraham, have pity on me and send Lazarus to dip the tip of his finger in water and cool my tongue, because I am in agony in this fire."
Abraham explains that it's impossible. The rich man makes a second request.