Both the old testament dead saints and the new testament dead saints shall be raised at the time of the rapture. As Jesus died and was buried, the old testament dead saints experienced spiritual connection with Jesus by which they shall be raised during the rapture. Psalm 16:10 refers partly to David experiencing resurrection at the time of the rapture. Though the Psalm 16:10 was fully fulfilled in Christ as Peter and Paul revealed in Acts chapters 2 and 13 respectively. There are more revelation in the book.
With this book, you will be properly equipped about the knowledge of the end time events. May the Lord reveal Himself to you as you read through this book.