Chords for the verses, using key of C:

C                                                          Cmaj7
I visited some houses where they said that you were living
                  C7                                                    F
And they spoke a lot about you and they talked about your giving
Fm                                                             cC                                                      Dm                           
They passed a basket with some envelopes, I just had time to write a note
                  G                        C
And all it said was, "I believe in you."

The first part (Sunday morning very bright) and the last part (My mother used to) use the chords for the last half of each verse (Fm, C, Dm, G, C).