Much of the way that Japanese religion merges with everyday life in Japan is in areas of physical cleanliness. The relationship between the gods and man in the Japanese worldview comes down to the matter of personal purity. If one is to be on good terms with the gods, it is believed that one must avoid things which would cause physical pollution. If it occurs by some accidental way, it must be taken away. And one great method for doing so is the most obvious one: a good hot bath. Japan is blessed by many mountains, and consequently many hot springs.
One can see here how the Bible speaks to this matter of cleanliness before the God who has made us and loves us. The cleansing God offers has nothing to do with a physical bath. In fact, it is quite useless for a right relationship with our Lord. "Although you wash yourself with soda and use an abundance of soap, the stain of your guilt is still before me" (Jer 2:22). God is into the deep cleansing that man needs, begins at the heart polluted with sin, and uses the agent of the Holy Spirit. "He saved us through the washing of rebirth and renewal by the Holy Spirit."
Having said that, our family does enjoy a good hot spring bath from time to time for the simple recreation of it. Here's a photo of us last week going to the famous Mt. Zao hot spring. It's an outdoor sulphur spring that leaves one with an unmistakeable smell. Rather ironic that bathing leaves one smelling.