Broncho Billy's Duty (1914)

Broncho Billy, a doctor and minister in the far west, is overwhelmed with grief one evening when he returns to his home to find a note from his wife stating that she could not bear the loneliness any longer and had gone to town with the man she loved. A few years later she is forced to her bed where she finally dies of a broken heart. Broncho had been told of her condition and hastens to her in time to kiss and forgive her. The negligent husband returns and Broncho Billy forgetting himself, is about to slay the man, when he suddenly remembers the note his wife had left for him, with these words, "Never forget your duty to your God."