When the answer to the question, Did Jesus preached Christianity? is No?
Jesus taught basic Judaism. Virtually every single thing he taught was already present in Judaism and had been for thousands of years – ‘love thy neighbour’ included. The easiest way to understand it is this: The religion *of* Jesus = Judaism; Jesus was a Jew The religion *about* Jesus = Christianity: Christians worship Jesus, but decades after his death, Paul and his Gentile followers developed Christianity, an entirely *separate* faith FROM Judaism.