Simplify the following text for a Grade 7 native English-speaking person.
Original: Simeon was a devout Jew who , according to the book of Luke , had been promised by the Holy Ghost that he would not die until he had seen the Saviour .
Simplified: The story told in the book of Luke was that Simeon , who was a Jew , had been promised by the Holy Ghost that he would not die until he had seen Jesus .