Muhammad is significant to followers of Islam because it is believed he was chosen by God to be a prophet of his word. The words of the Quran were revealed to Muhammad by God.
Muhammad was a spiritual man who spent a lot of time meditating. One night while meditating, an angel appeared to him and ordered him to recite. The words that Muhammad recited were believed to be God's words. During the remainder of his life, Muhammad was given revelations by God. He recorded those revelations and they became the Quran. The Quran is a Muslim scripture that is used to study the word of God.
After his first revelation, Muhammad was led to preach the word of God to other followers. He preached that there was only one God and his name was Allah. Muhammad's message was well-received by many, but some saw it as threatening. Led by God, Muhammad led his followers from Mecca to Medina. The spiritual journey, known as the Hijrah, was an important moment in Islam's history. The year in which it happened, 622, became the first year of the Islamic calendar. Muhammad eventually returned to Mecca with his followers. He continued to spread God's word until his death.