Here is an excellent sermon/speech titled, “Semper Reformanda,” which means always reforming. Always reforming is a principle of the Reformed church.
The address as a good description of history, geographical implications, the state of affairs of Christianity in the 21st Century and, most importantly, some suggestions for getting/keeping the church on track.
Included is Os Guinness’ Gravedigger Thesis (Gravedigger’s Paradox). More here.