"They tell me a revival is only temporary; so is a bath, but it does you good"

This quote by Billy Sunday is a humorous way of expressing the concept that revivals, like baths, can be beneficial even if they are just short-lived. Sunday is recommending that although a revival may not last forever, it can still have a positive effect on people's lives. He is implying that just as a bath can make somebody feel revitalized and rejuvenated, a revival can likewise produce a sense of renewal and hope. Sunday is motivating individuals to take advantage of the positive impacts of a revival, even if it is just short-term. He is suggesting that the benefits of a revival can be just as advantageous as a bath, which it is worth making the effort to experience it. Eventually, Sunday is emphasizing the significance of making the most of the favorable results of a revival, even if it is only momentary.