Theophany: [n] a visible (but not necessarily material) manifestation of a deity to a human person

Orthodox Christians call the event of Jesus’ baptism Theophany because God appeared in Three Persons, Father, Son and Holy Spirit. Catholic Christians celebrate the feast to remind themselves of their own baptism and the vows made at that baptism. I thought this was a meaningful prayer for all who have been baptized into Christ, even though I hold to believers’ baptism rather than infant baptism.

Almighty, eternal God, when the Spirit descended upon Jesus at his baptism in the Jordan, you revealed him as your own beloved Son. Keep us, your children born of water and the Spirit, faithful to our calling. We ask this through our Lord Jesus Christ, your Son, who lives and reigns with you and the Holy Spirit, one God, for ever and ever.

See Matthew 3:13-17, Mark 1:9-11, Luke 3:21-22, and John 1:39-34 for accounts of Jesus’ baptism.