Islam is the world's second-largest religion, and teaches that there is only one God, and that Muhammad is the last in a long line of God’s messengers that includes Adam, Noah, Abraham, Moses, and Jesus.
The word for "God" in Arabic is "Allah", and the word "Islam" means “to submit to God's will”. Followers of Islam, called Muslims - or "those who have submitted to God's will" - believe that Islam is a continuation of the primordial faith that was first revealed to Adam and that continued to be subsequently revealed to Abraham, Moses, and Jesus, and that Muhammad is simply the final messenger of God in this long lineage of prophets.
Muslims believe that Islam's foundational text, the Quran, is the unaltered word of God as revealed to Muhammad, and that this revelation completes the earlier revelations set forth in Judaism' Tanakh and Christianity's Bible. While the Quran is Islam's foundational text, it is complemented by what is called the Hadith, a record of the words and actions of Muhammad.
