It wasn't there in Paul's day, and it's not here yet either, but it will come when we all submit to his word and to His Son. We then learn about the benefits of the unity that comes from God. God wants to bless us with his unity. When we are united by faith in the word of God, we are grounded firmly in Christ. We are no longer babies.
Babies have to be carried everywhere.
They are dependent on a parent to lift and carry them. Not so the Christian who lives in unity with the word of God. He or she is able to stay put in the doctrine of Jesus Christ. The wind and waves may pound against him, but he remains grounded, like a lighthouse on a stormy shoreline, lighting the way for generations of ship that pass. This is the benefit of God's unity.