The fourth day of the Forefeast of Theophany falls on January 5. If January 5th falls on a weekday, the following order is observed:
Vespers on the evening of the 4th, then Matins. The First Hour is not read after Matins.
On the 5th we read the Royal Hours, followed by Vespers and the Liturgy of Saint Basil the Great.
If the Eve of Theophany falls on Saturday:
The Royal Hours are read on Friday, but there is no Liturgy. Vespers on the evening of the 4th, followed by Matins. The Liturgy of Saint John Chrysostom is celebrated on Saturday morning.
If the Eve of Theophany falls on a Sunday:
The Royal Hours are read on Friday, but there is no Liturgy. Vigil is served on Saturday evening, and the Liturgy of Saint John Chrysostom is celebrated on Sunday.
There are thirteen readings at Vespers on the Eve of Theophany, and the entrance is made with the Gospel. There is fasting today, whatever day of the week it may be.
Troparion — Tone 4
Of old, the river Jordan / turned back before Elisha’s mantle at Elijah’s ascension. / The waters were parted in two / and the waterway became a dry path. / This is truly a symbol of baptism / by which we pass through this mortal life. / Christ has appeared in the Jordan to sanctify the waters!
Kontakion — Tone 2
O Christ, in Thy compassion and infinite mercy, / Thou art coming as a man to be baptized in the Jordan, / in order to take away the many transgressions of us all, / clothing me in the garment of ancient glory / of which I was cruelly stripped bare.
Genesis 1:1-13 (KJV)
1 In the beginning God created the heaven and the earth.
2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
3 And God said, Let there be light: and there was light.
4 And God saw the light, that it was good: and God divided the light from the darkness.
5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
6 And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.
8 And God called the firmament Heaven. And the evening and the morning were the second day.
9 And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so.
10 And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good.
11 And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit tree yielding fruit after his kind, whose seed is in itself, upon the earth: and it was so.
12 And the earth brought forth grass, and herb yielding seed after his kind, and the tree yielding fruit, whose seed was in itself, after his kind: and God saw that it was good.
13 And the evening and the morning were the third day.