Just briefly,
In the beginning, there was just the Jews, Then came Jesus, who was born, lived and died, as a Jew, But Saul, (St Paul), who was also a Jew, said that you didn't have to be a Jew to worship the Jewish God, and that was the beginning of Christianity.
Islam.
Historically, jews and Muslims, as you say, came from Abraham, but approximately, 300 years after Jesus died, Mohammed, who was illiterate, had a dream, where the whole of the Koran was imprinted in his head,
Just briefly, I could go very much deeper, but its not necessary.