This last Sunday was Trinity Sunday. The Sunday immediately following Pentecost Sunday is Trinity Sunday. On Trinity Sunday we proclaim the mystery of our faith in the triune God: Father, Son and Holy Spirit, One-in-Three and Three-in-One. What this means is that God is one in essence and three in persons. These designations express three crucial truths: (1) The Father, Son, and Holy Spirit are distinct Persons (2) each Person is fully God, (3) there is only one God. The reality is that there is one God who exists as three persons.