First, let me address the simple point that Jesus instituted the Church when he left this earth. He left the Apostles, with Peter as head, in charge of teaching the Gospel. I have read many writings of our Apostolic Fathers and have discovered that division in the Church was a problem almost from the beginning. The Apostles were left to face many issues from accepting Gentiles, to valid baptism, even sexual abuse. Many documents have been written addressing the unity of the Church. This is not meant to offend any Protestant out there, but simply put Christ left us with One Church. The Roman Catholic Church can trace her roots back to the Apostles. Unfortunately, even from the beginning men wished to "be in charge" and came up with new twists on ancient beliefs. These are called heresies. Many still exist today in so-called Protestant religions. The Oneness Pentecostals do not believe in the Trinity as do the Jehovah's Witnesses. This is only one example. Some do not believe the divinity of Christ and the list goes on. Protestant churches spring up around division, confusion and heresy. St. Cyprian of Carthage addressed this in 251 A.D. He said "If someone does not hold fast to this unity of t he Church, can he imagine that he stills holds the faith? If he resists and withstands the Church, can he still be confident that he is the Church, when the blessed Apostle Paul teaches this very thing and displays the sacred sign of unity when he says: 'One body and one spirti, one hope of your calling, one Lord, one faith, one Baptism, one God'? (Ep 4:4-6)....Let no one mislead the brotherhood with a lie, let no one corrupt the faith by a faithless perversion of the truth." Has there always been corruption in the Church? Probably. Many people have left and started there own "following" This will continue, I am afaid, until Christ's triumphant return. As for me, I will follow the path laid down for me by the Apostles, not by Martin Luther, Zwingli, Calvin, or the host of others.
Cindy