6) The unity of the Church from now on is identical with the majority of the bishops. A conciliarism has developed in hierarchical terms, and the majority of the bishops from now on replace all other authorities. And only much later did the Roman bishop claim and receive a special standing among the bishops, and finally the majority of the bishops as authority was abolished.

7) The Church had become a state Church This was the price which had to be paid for unity. The emperor did not command the content of the dogma, but he exercised pressure. Therefore revolts occurred against it, and the emperor after Constantine had to exercise even more pressure. All this meant a new development of Church history, and even of world history.
Paul Tillich, A History Of Christian Thought – Table of Contents