Simplify the following text for a Grade 12 native English-speaking person.
Original: The early chapters , set in Jerusalem , discuss Jesus ' Resurrection and Great Commission , his Ascension with a prophecy to return , the start of the Twelve Apostles ' ministry , and the Day of Pentecost .
Simplified: The early chapters , play in Jerusalem , report Jesus 's Resurrection , his Ascension , the Day of Pentecost , and the start of the Twelve Apostles ' ministry .