In God - Colossians 3:3

Colossians 3:3 ESV 

For you have died, and your life is hidden with Christ in God.

We have life even though we are dead to the world, just as we were dead while we walked hidden in the darkness of world, before entering the body of Christ. We have received His life, the life of God. 

We enter His body because He has entered us. Just as He incarnated into the body of the man Jesus, He fills the body of each believer. These are the rooms He has gone before us to prepare. He is preparing us even now. We are the house of God that is built without human hands, a city on a hill which is the mountain of God. 

If we are with Christ in God, we are hidden from the world. The world cannot see the Jesus that is given to every believer in the sealing of the Holy Spirit. We in God, in His rest.