Is a Denomination's Unity based on Policy and Procedures? Or something more, and actually, not on Man Made and Voted Laws.
Is Christian Unity based radically different? Belief in:
God the Father, maker of heaven and earth
God the Son, virgin birth, one equal with the Father, through Him all things were made, brought Salvation to man through His death, rose again, is now seated at the right hand of the Father. Will come again.
The Holy Spirit, giver of life, active part in Creation, and proceeds from the Father as the Son as a Gift to humans. He spoke through the prophets.
Recognize Baptism acknowledges in a tangible way the forgiveness of sins.
Christ died, is risen, will come again to give new life to the dead, and we look for the life of the world to come.
That Jesus said to take the Good News to all mankind, and baptize.
Are ALL Humans told to bring the News and Baptize? or, just a select few, selected by MEN and not the Holy Spirit?  Maybe it IS ALL and no selection is needed