In theology, correspondence is when something in the physical world has a spiritual or religious meaning. It is like a connection between what happens in the spiritual world and in our physical world. For example, if you go to a religious ceremony, like a baptism or a wedding, there are often symbols used that have spiritual meaning, such as water for baptism or a ring for marriage. These are correspondences because the physical actions have a spiritual meaning – water for baptism means being "born again" in a Christian faith and a ring for marriage means a promise or a covenant between two people.