Not until the Reformation did the quest for truth and reform seek again this faith of the saints. Jude 3 Reformation The Reformation that sought to remove creedal errors and practices by a return to the oracles of God's Word has all but died. Certainly tolerance is good. True Christians never did nor ever will persecute anyone. Persecution stems from the spirit of antichrist.
Contradictory teachings mean unquestionably that someone is wrong.
Unity with serious errors can be a dangerous combination. The Reformation came about because the faithful reformers such as Luther, Melanchton and others wanted the pure truth. They obeyed God and His Word instead of the then united Church. It was the quest for truth that brought the divisions. To try to create unity without finding it first in the truth of God's Word is wrong and a rejection of the Reformation principles.