The Romans had killed Jesus, and very likely confiscated all the accumulated and pooled property of all of the members of the communal society called "The Kingdom of God". These members very badly needed money to survive, and very likely many sources of charity had dried up after the Romans showed their opposition to that group of Jews and its helpers. Paul and the leaders of the "Kingdom of God" agreed to divide the money-raising efforts so that Paul, also a Jew, would try to get the money from non-Jews, while the "Kingdom's" leaders would try to get money from the Jews.
..... Eventually "the tail wagged the dog", with the non-Jewish donors insisting that some of their own, pagan, mythology-based, beliefs be incorporated, even substituted for the most of the teachings of Jesus. Therefore the split happened, with Paul calling the "revised" belief system a "universal" (catholic means "universal") system, similar to Esperanto, which was a much later attempt to produce a "universal" language.
..... By the way, the two versions of Talmud had not yet been written at that time, nor had any of the New Testament books.