Who Lives in Heaven?

Hebrews 12:18-29 

It is necessary and pleasant to study heaven.  If we are saved, we are already a citizen of heaven. Yes, we are citizens of heaven who are exiled in this world, this world for believers is not their home.  The believer is on a pilgrimage to heaven, and every Christian is presently an ambassador of heaven in this world.  Heb 13:14 "For here have we no continuing city, but we seek one to come."   Believers look forward to heaven.  Even though heaven is in eternity, it is very near, very close.

Who lives in heaven?  who is presently in heaven?  There are three categories: 

 God lives in heaven, the triune God lives in heaven.   That makes the God of Christianity different from any other God, the triune God that is one God but three persons, God the Father, God the Son, God the Holy Spirit.  Three persons, one God.  This is a foundation of Christian doctrine.  Same in substance, equal in power and in glory.  Same in essence.  The essence of God is holiness, God the Father is holy, God the Son is the holy child, and the Holy Spirit.  Some people might say they don't understand so they can't believe it  but the answer is, of course you can't understand it, nobody can understand it.  How can a finite limited human mind understand the infinite God?  We cannot comprehend infinity because to understand it you would have to be equal with God.  But we believe it just the same because God has revealed himself in the bible. That is faith.  The bible says 1 John 5:7 "For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one." In John 1:1 the apostle John refers to the Lord Jesus as the Word.  Jesus says I and my Father are one.  The bible says that God's dwelling place is in heaven.  We have faith and trust in God's word that what it says is true even though some of it is beyond our full grasp.  It is the greatest fallacy that we need to understand something before we can believe it.  You don't understand exactly how airplanes work but you trust that they can fly.