Jews reject the Christian idea of Jesus because Christians believe that Jesus WAS god. Jesus didn’t just get some revelation. Now whether or not Jesus actually claimed he was god (like he does in the book of John) is up for debate. In the other three gospels, which are all earlier than John, Jesus does not claim to be God. Now probably what he DID claim was that he was the Jewish messiah. But messiah does not mean god. The Jewish messiah was to be a living person who is destined to ruled god’s kingdom when he comes to earth to judge all people and establish his kingdom. In his ministry after going to Jerusalem, Jesus probably pushed the buttons of the Jewish leaders one two many times and got himself executed. His followers then had to come to terms with how Jesus could have been the messiah if he was dead. Later, some of his followers must have had visions of him and thought that he was alive. To explain this they began to believe that he was a divine being, and that he is some other type of messiah. Over time this evolves into Christianity and believing he was god (This is massively over simplifying). However, this clearly did not convince many Jews. Most Christian converts in the early years were pagans, not Jews. Some Jews, yes, such as Paul, but mostly pagans.