I consider most denominations to be fossilised revivals. Some may get a revelation from God, for example, baptism by immersion, then believe that they have arrived. Woe betide someone who says that there is more to know than the Baptists teach. One very senior figure in the American Baptist organisation said that they are not perfect, but they are as close as it gets. It reeks of spiritual pride.
I experienced something like this in the early days of the charismatic movement. There was contempt for anyone who did not embrace it. Yet the charismatic church I attended was wracked with division and the pastor preached a false doctrine.
The perfect church is only that which is of Christ. Everything else, no matter how good it looks, is dead works and destined for the fire of God's judgement.