Simplify the following text for a Grade 8 native English-speaking person.
Original: The Gospels of Mark , Matthew and Luke ( known as the Synoptic Gospels ) include many of the same episodes , often in the same sequence , and sometimes even in the same wording . The relationship of Gospel of Matthew to the Gospels of Mark and Luke is an open question known as the synoptic problem .
Simplified: 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 .