Anyone researching their ancestors in Berlin needs an address to narrow down their search due to the size of the city. Entries in church registers are usually made at the place of residence and at the registry offices at the place of the event. The relevant churches and registry offices are assigned to the streets in Berlin. If you don't know the address, you can try to find it in the old Berlin address books (note: before 1899, the inhabitants of the suburbs that did not belong to Berlin at that time can be found there, but some of the later districts were never suburbs of Berlin, e.g. Köpenick, Spandau). Once you have found an address, you can look in the following table to see which Protestant church and which registry office (from 1874) is responsible for it. This is only an excerpt from various lists, which can also be found in the address books but were also published individually. The table only contains streets in the old Berlin before 1921 without the suburbs! Whether you can find the entry you are looking for in the relevant books is still a matter of luck, because there was no obligation to go to the relevant church. And if someone was born or died in a hospital, then you have to look for the civil register entry there.