Jesus is the centerpiece of the Bible because He is the centerpiece of all that God has done and will do with the human race and this creation in which we find ourselves.
Abraham was a preliminary. King David was a preliminary. All of the prophets were preliminary. All of ancient Israel was preliminary. The church was preliminary.
You ask how the church could be preliminary since it came after the resurrection and not before? Indeed it came after the resurrection but it came before the glorious crowning of Jesus as King of kings and Lord of lords in the coming of the kingdom of God. (More on this in related posts shown below.)
Put away all objects and utensils of worship other than your heart before God. Worship Christ from the center of your being.
See these related posts: Jesus Christ Has Already Come Again
Bible notes on this post.
The purpose of this blog is to praise Jesus Christ for those who want to hear about Him without having to join something.