There are an estimated 1.2 billion Muslims worldwide. No more than 20 percent of Muslims live in the Arabic-speaking world. The country with the largest Muslim population is Indonesia. Muslims believe in One, Unique, and Incomparable God. They believe in the Day of Judgement and individual accountability for actions. Muslims believe in a chain of prophets beginning with Adam and including Noah, Abraham, Ishmael, Isaac, Jacob, Joseph, Job, Moses, David, Solomon, and Jesus. God’s eternal message was reaffirmed and finalized by the Prophet Muhammad (peace be on them all). One becomes a Muslim by saying, “There is no deity but God, and Muhammad is the messenger of God.” By this declaration, the person announces faith in all of God’s messengers.