Christ is bathed in light; let us also be bathed in light. Christ is baptized; let us also go down with him, and rise with him.
Today let us do honor to Christ’s baptism and celebrate this feast in holiness. Be cleansed entirely and continue to be cleansed. Nothing gives such pleasure to God as the conversion and salvation of men, for whom his every word and every revelation exist. He wants you to become a living force for all mankind, lights shining in the world. You are to be radiant lights as you stand beside Christ, the great light, bathed in the glory of him who is the light of heaven. You are to enjoy more and more the pure and dazzling light of the Trinity, as now you have received—though not in its fullness—a ray of its splendor, proceeding from the one God, in Christ Jesus our Lord, to whom be glory and power for ever and ever. Amen.
From a Sermon by Saint Gregory of Nazianzus, bishop (330-389 AD)