In the Catholic Byzantine Rite and in the Orthodox Tradition, today is the Epiphany, the showing forth of God to all.
Here is a great icon of this event. Christ is being revealed to the world in His Baptism, which is not to take away any sin from Him, the sinless one, but to show up the way to freedom from sin.
Today, God is "shining forth", "being manifested" to the world of the disciples and those who were following John
This Epiphany is one of three: the Epiphany to the Three Kings, this one of the Baptism of Christ, and the third is the Transfiguration.
Meditating on the Three Epiphanies reveals a pattern of God giving His Son to the world at key points in Christ's Life.
The first, at His Birth, emphasizing the Incarnation; the second in the Jordan, emphasizing the proclamation of the Gospel to the world; and the third, the Transfiguration, the announcement of Christ's glory which will happen in the Resurrection from the Dead.
Troparion (Tone 1)
When You, O Lord were baptized in the Jordan. The worship of the Trinity was made manifest. For the voice of the Father bore witness to You and called You His beloved Son. And the Spirit, in the form of a dove, Confirmed the truthfulness of His word. O Christ, our God, You have revealed Yourself And have enlightened the world, glory to You!
Kontakion (Tone 4)
Today You have shown forth to the world, O Lord, and the light of Your countenance has been marked on us. Knowing You, we sing Your praises. You have come and revealed Yourself, O unapproachable Light.
Troparion (Tone 4)
- Today the Lord enters the Jordan and cries out to John: “Do not be afraid to baptize me. For I have come to save Adam, the first-formed man.”
Kontakion (Tone 4)
- Prepare, O Zebulon, And adorn yourself, O Naphtali; River Jordan, cease flowing And receive with joy the Master coming to be baptized. Adam, rejoice with our First Mother And do not hide yourself as you did of old in Paradise; For having seen you naked, He has appeared to clothe you with the first garment. Christ has appeared to renew all creation.