It is a prayer, a declaration and a desire:-
“May God himself, the God of peace, sanctify you through and through. May your whole spirit, soul and body be kept blameless at the coming of our Lord Jesus Christ.” (1 Thessalonians 5 v 23)
The focus is back on the return of Christ but also the wholeness of your life when He comes.
That your spirit, the connecting God-part of you, the place where your worship of Him commences, the place which is your Holy of holies and the primary focus on your life is kept without complaint.
That your soul, your will, intellect and your emotions be submitted to your spirit so that it is kept without fault.
That your body, which receives direction from your soul, which in turn is mastered by your spirit, be kept safe and healthy and ready for a new resurrected body.
At the return of Christ may your whole life be ready. May your soul be submitted to your spirit as you live demonstrating the nail-printed body of Christ in this world. That is the prayer. That is the declaration. That is the desire.
Missions Paul 