Muslims believe in the One, Unique, Incomparable, Merciful God--the Sole Creator, Sustainer and Cherisher of the Universe; in the Angels created by Him; in the Prophets through whom His revelations were brought to humankind; in the Day of Judgment and in individual accountability for actions; in God's complete authority over destiny, be it good or bad; and in life after death.
Muslims believe that God sent his messengers and prophets to all people beginning with Adam (Adam) and including Noah (Nuh), Abraham (Ibrahim), Lot (Lut), Ishmael (Isma'il), Isaac (Ishaq), Jacob (Ya'qub), Joseph (Yusuf), Job (Ayb), Moses (Musa), Aaron (Harun), David (Dawud), Solomon (Sulayman), Elias (Ilyas), Jonah (Yunus), John the Baptist (Yahya), and Jesus ('Isa); peace be upon them all.
God's final message to humanity, a reconfirmation of the eternal message and a summing up of all that has gone before, was revealed to the Last Prophet Muhammad (peace be upon him) through the Archangel Gabriel.
One becomes a Muslim by believing and proclaiming that "There is none worthy of worship except God, and that Muhammad is the Messenger of God." By this declaration the believer announces his or her faith in all God's messengers, and the Scriptures (in their pristine original form) that these messengers brought.