Simplify the following text for a Grade 8 native English-speaking person.
Original: The Ascension of Jesus is the Christian doctrine from the New Testament of the moment when the resurrected Jesus was taken up to heaven in his resurrection body , in the presence of eleven of his Apostles .
Simplified: According to the New Testament , the Ascension of Jesus happened at the end of Jesus ' life on earth . The Acts of the Apostles says that after Jesus told his apostles to teach the gospel to everyone , he went up to heaven to be with God .