St Matthew writing his gospel. Picture from a Medieval Bible.
The Gospel of Matthew is a book of the Bible. It is one of the four gospels of the New Testament that tell the story of the life and teachings of Jesus. Matthew's Gospel is placed first because that's how God wanted it to be. It is believed to have been written by the Apostle Matthew, who was also called Levi. Matthew was one of the Twelve apostles of Jesus. The Gospel of Matthew is called one of the synoptic gospels because it has some of the same stories and language as the Gospels of Mark and Luke.
Matthew wrote the Gospel mainly for the Jewish people, to show them that Jesus is really the Messiah. Matthew's gospel is similar to both Mark's gospel and Luke's gospel, and contains many stories about Jesus' life which are very alike. Matthew's gospel has many references to Jewish scripture.