Christ is baptized! In the River Jordan!
When Thou O Lord wast baptized in the Jordan,
The worship of the Trinity was made manifest;
For the voice of the Father bare witness to Thee,
And called Thee His beloved Son.
And the Spirit in the form of a dove
Confirmed the truthfulness of His word.
O Christ our God, Who hast revealed Thyself
And hast enlightened the world,
Glory to Thee!
An explanation of Theophany vs. Epiphany here.