I have lived there.
I have lived in the Jerusalem for Reformed Christians. 12 years of it. I have attended two of the Christian colleges, one of the seminaries. I have worked for a Christian publishing house as well as a Christian psychiatric hospital. I would pass at least a dozen (or more) Reformed churches on my way to Church.
I have been in the restaurants and have heard people talking about BSF or the Catechism. I visited Mars Hill once. I know the difference between Heritage Reformed and Free Reformed. I know the difference between RCA, CRC, URC, PRC, FRC, HRC, IRC and NRC.
I know what happened in 1924 and why that little and insignificant seminary in Grandville is still angry about it. I have been to the intersection where there is a Reformed church on each corner, literally.
I have seen love grow cold, I have seen pastors eaten alive, I have seen the deadness of dead orthodoxy. I have seen the love for anything but Confessional Christianity. I have seen the Jerusalem sinner. I have been the Jerusalem Sinner.
May the Lord Jesus Christ break through the religion and bring true revival and reformation.