I anticipate a lot of surprises in Heaven

In Jesus ‘Priestly prayer’ (John 17:23) he prays “that they may be perfected in unity….” Jesus is praying for the disciples as well as us, the present-day followers. His prayer indicates that our “perfection” is accomplished in “unity.” I wish that all Christians would cease fighting about whose church and doctrine is right. Jesus’ desire in this prayer is we could agree that we are all pilgrims seeking a relationship with God. Relationship with God is more important than whose doctrines are correct. I know I do not have everything figured out correctly—whatever “correctly” means. I would like to be a Baptist/Methodist/Episcopal/Catholic/Pentecostal/Quaker/Orthodox/Presbyterian/Disciples/Church of God/Church of Christ/ etc. and on ad-nauseum. Why have we established so many different churches and denominations? Why do we have to choose? Why can’t we belong to several churches and denominations? Why do we need to be so certain that my way is the only way as well as the right way? I anticipate a lot of surprises in Heaven.