The church is the body of Christ a spiritual house made up of living stones.
Christ did not leave behind an anarchy in the leadership of his church. That is what is meant by Jesus building his church on the rock of Peter. His church is a visible church. That has been the understanding of the church until Martin Luther needed to get around his excommunication by the Pope. Ironically, after saying that Scripture is the sole source of authority, Luther had to found the Lutheran church to get control over the heterodox teachings of other "reformers."
Consider these verses:
Matthew 18:5 "Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
16 But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.
17 And if he shall neglect to hear them,
tell it unto the church: but if he neglect to hear
the church, let him be unto thee as an heathen man and a publican."
Explain how one can take the issue to "the church" if the church is invisible? You can't turn to the Church as an authoritative decider of disputes if you can't locate the Church in the first place.
1Timothy 3:14 I hope to come to you soon, but I am writing these instructions to you so that, 15 if I am delayed, you may know how one ought to behave in the household of God, which is
the church of the living God, the pillar and bulwark of the truth."
How do you get instructions on how to act from an invisible body of believers? If you answer that your denomination's convention decides these things, then show me how every single member of Christianity decides things?
Ignatius of Antioch speaks of a visible Church when he outlines its nature in 107 AD, marking it, for the first time of which we have record, as the "Catholic Church": "Where the bishop is found, there let the people be, even as where Jesus Christ is, there is the Catholic Church."
Only a visible, authoritative Church could have set in place the pillars that would support Christian belief and practice through the ages. Here are a few examples:
1. Codification of the Bible. The Bible did not codify itself, did not specify which books, among many, were to be seen as inspired. A visible, authoritative body, comprised of bishops, decided the content of the canon.
2. The worldwide councils. Christianity's doctrinal parameters have been charted by the ecumenical councils, now numbering 21, each conducted under the authority of the visible, universal Church. Not once in those 21 sessions did an "invisible" group of bishops meet and deliberate. 3. The Lord's day. The Christian Sunday replaced the Saturday sabbath of the Old Testament. The visible Church made this change.
4. Christmas and Easter. The Bible nowhere mentions the word "Christmas" or the date for Christmas. The celebration of Christmas on December 25 was a decision of the Church. (The feast didn't arise all by itself.) Much the same can be said for Easter as a feast separate from the other Sundays which commemorate the Resurrection. It was a visible Church, headed by a definitely locatable pope, that settled the dates of observance for the two key feasts.
5. The calendar. It is Christ's visible Church, its reach extending into the secular realm, which has given us the Gregorian calendar, named after Pope Gregory XIII.
It took a visible church that had visible authority to condemn heresies in the early church. Here is a list of them.
Adoptionism - God granted Jesus powers and then adopted him as a Son.
Albigenses - Reincarnation and two gods: one good and other evil.
Apollinarianism - Jesus' divine will overshadowed and replaced the human.
Arianism - Jesus was a lesser, created being.
Docetism - Jesus was divine but only seemed to be human.
Donatism - Validity of sacraments depends on character of the minister.
Eutychianism - Jesus finite human nature is swallowed up in His infinite divine nature.
Gnosticism - Dualism of good and bad and special knowledge for salvation.
Kenosis - Jesus gave up some divine attributes while on earth.
Marcionism - An evil God of the O.T., good God of the N.T., only 11 books in the Canon of Scripture
Modalism - God is one person in three modes.
Monarchianism - God is one person.
Monophysitism - Jesus had only one nature: divine.
Nestorianism - Jesus was two persons.
Patripassionism - The Father suffered on the cross.
Pelagianism - Man is unaffected by the fall and can keep all of God's laws.
Semi-Pelagianism - Man and God cooperate to achieve man's salvation.
Socinianism - Denial of the Trinity. Jesus is a deified man.
Subordinationism - The Son is lesser than the Father in essence and or attributes.
Tritheism - The Trinity is really three separate gods.