It seems in fact that the history of disagreements, of seperating, of going one’s own way, of schism (sort of), of a common faith that was not all together consistent and unified, and of difference has been apparent for a very long time – from the beginning. The Church has never been “one” by any visible or discernable way, but we are only “one” by way of what Jesus did and continues to do and our intentional following of the Way of Christ.
Acts 15:36-41
Disagreement Between Paul and Barnabas
“Some time later Paul said to Barnabas, “Let us go back and visit the brothers in all the towns where we preached the word of the Lord and see how they are doing.” Barnabas wanted to take John, also called Mark, with them, but Paul did not think it wise to take him, because he had deserted them in Pamphylia and had not continued with them in the work. They had such a sharp disagreement that they parted company. Barnabas took Mark and sailed for Cyprus, but Paul chose Silas and left, commended by the brothers to the grace of the Lord. He went through Syria and Cilicia, strengthening the churches.”