Islam is a monotheistic religion that originated in the 7th century. It was revealed to the prophet Muhammad through the Quran. Muslims believe the Quran is the direct word of God and it perfects previous revelations given to Jews and Christians. The five pillars of Islam are the core beliefs and practices in the religion which include the shahadah, salah, zakat, sawm, and hajj. After Muhammad's death, a division emerged between Sunnis and Shiites over religious and political authority. Today there are debates among Muslims on issues like modernization and national identity.