Judaism vs christianity and Islam

The only one that gives the whole world a chance of going to heaven is the one that is the original is the one that was given by God himself with millions and millions of witnesses. Everything else was started by a single human being that does not have any witnesses that are valid. Christianity started by one dude that says that his mom said that she was she gave birth to the guy when her husband was away on a trip and how is he a husband if they not did not consummate the marriage? Not really sure today. That's hard for me to understand how people don't understand that. Like how do you consummate a marriage and call somebody your husband if you don't consummate the marriage? Because technically she was Jewish. So according to Jewish law to consummate a marriage you have to be together. So I don't know. I don't get it. Like logic in Christianity doesn't exist.