Interpretation of dream: Bells

To hear a bell in your dream, represents a warning or a call to order. The ringing of the bell could signal the beginning of something new or a way for your unconscious to prepare you for whatever is happening next. If the bell rings and never stops, then it suggests that you are experiencing extreme anxiety.

More interpretations:
Bells (Miller): To hear bells tolling in your dreams, death of distant friends will occur, and ...