Now, Muslims also believe that the Quran isn't the first book that God had revealed to mankind. They also believe that the Torah, which is the first five books of the Hebrew Bible, and also the first five books of the Christian Old Testament, Genesis, Exodus, Leviticus, Numbers, and Deuteronomy, they believe that to be a revealed text from God through the prophet Moses. They also believe that Psalms is a revealed text from God through King David, so through the prophet David, who lived around 1000 BCE. And they think that the Gospel is a revealed message through Jesus. Now, above and beyond these revealed texts, another significant part of the Muslim tradition or faith are the notions of Sunnah and Hadith. And Sunnah are the practices and life and sayings of Muhammad, and many of them are accounted for in the Hadith. Hadith are secondhand accounts of other people who lived at the time of Muhammad, although many of them were written decades or sometimes hundreds of years later.