Who was a religious teacher who preached a new monotheistic religion?

One prominent religious teacher who preached a new monotheistic religion was the Prophet Muhammad. He founded Islam in the 7th century CE, emphasizing the belief in a single, all-powerful God (Allah) and the importance of following His guidance as revealed in the Quran. Muhammad's teachings united various tribes in the Arabian Peninsula under a shared faith and laid the foundation for one of the world's major religions.