How and why did muhammad both break from tribal and clan traditions and build upon them in creating islam?

His marriage to Khadijah and his eviction from the clan and the fact that he received a direct message from angel gabriel and the mission he was given transcended beyond the bothers of his tribe made him different from his father Abdallah and also that of his uncle. The people of Mecca had been worshipping alot of deities and the messages of mohammed came as a rude shock and the fear that the number of sympathizers he was getting made