This book is a book concerning the things of God and his Kingdom Jesus promised to return to take his believers to be with him. 1 John 14;2,3. The dead and living "in Christ " could be "caught up" (Raptured) at any time. ( 1Thes. 4:16, 17; 1 Cor. 15:51,52) Who should you and I be trusting 100% for our salvation? ( John 14:6)