Because water has the function of purification, it is often thought in religion that water can purify people's body and soul from evil. In Christianity, in the Old Testament, it was recorded that at the beginning of creation, God was flooded by human sins, thus destroying the world. In the New Testament, Jesus himself was baptized by John the Baptist, and later Christians entered the church through baptism. The gospels record that Jesus performed many miracles related to water. At a wedding reception in Ghana, he turned water into wine and walked on the water. The holy water of Catholicism is considered to purify evil, and the springs of some holy places are considered to cure diseases.
In eastern religions, the Hindu tradition is that people must go to varanasi once in their lives to bathe in the water of the Ganges River and wash away their sins. In more eastern China, the image of avalokitesvara in Mahayana Buddhism is given with a willow net bottle; In Taoism, there is a custom of soaking ashes in water for people to drink and treat diseases; Feng Shui believes that the orientation of all objects has an impact on fortune, and water is one of the factors that affect the environment.