The concept that there is one God who shows himself in threefold form: Priest who is a member of a religious order., Son (Jesus of Nazareth) and the The active power of God in people. It inspires people to make God present in the world. Jesus was 'filled with the Holy Spirit' and thus showed in his speech and actions what God is like. People who allow the Holy Spirit to work in them also speak and act like God and Jesus at those moments. See also 'Pentecost'..