The church bell is an asset from times before everyone had a smartphone in his hand and wouldn’t leave the house without a watch with him. The church bell would wake up the people, tell them when to have lunch, and also tell them when it is time to finish up work.
You would also know if someone is celebrating a wedding or if a sad event like a funeral is being held at the church. When cellphones weren’t even developed yet and phone calls were expensive this was the quickest way to deliver messages.