Muslims believe that to achieve peace, one must submit to the will of God. Allah is the Arabic word for God used by both Arab Muslims and Arab Christians. The Bible in Arabic also uses the name Allah to refer to God. There are approximately 1.8 billion Muslims in the world. That means that about one in every four people on earth is a Muslim. While many might associate Islam with the Arab world, Arabs only make up 20% of the Muslim population. The country with the single largest Muslim population is Indonesia. About two-thirds (62%) of Muslims live in the Asia-Pacific region. There are about 3.3 million Muslims living in America.