Muslims believe that the Quran is the word of God, revealed to the Prophet Muhammad through the angel Gabriel. It is considered to be the ultimate source of guidance and teachings for Muslims, and is believed to be unchanged and preserved since its revelation over 1400 years ago. Muslims do not believe that the Quran is the word of Muhammad, but rather the literal word of God. Additionally, the Quran contains teachings and stories from previous prophets, but Muslims believe it to be a unique and distinct revelation.