The 4th Sunday Of Advent:

Rorate Caeli

Collect: Excita, quǽsumus, Dómine, poténtiam tuam, et veni: et magna nobis virtúte succúr- re; et per auxílium grátiæ tuæ, quod nostra peccáta præpé-diunt, indulgéntia tuæ propi- tiatiónis accéleret: Qui vivis. O Lord, we beseech Thee, stir up Thy power, and come, and with great might succor us: that by the help of Thy grace that which is hindered by our sins may be hastened by Thy merciful forgiveness. Who livest and reignest, with God the Father, in the unity of the Holy Ghost . . . GOSPEL   Luke  3: 1-6: Now in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being governor of Judea, and Herod being tetrarch of Galilee, and Philip his brother tetrarch of Iturea and the country of Trachonitis, and Lysanias tetrarch of Abilina, under the high priests Annas and Caiphas: the word of the Lord was made unto John, the son of Zachary, in the desert. And he came into all the country about the Jordan, preaching the baptism of penance for the remission of sins, as it was written in the book of the sayings of Isaias the prophet: A voice of one crying out in the wilderness: Prepare ye the way of the Lord, make straight His paths: every valley shall be filled: and every mountain shall be made straight, and the rough ways plain: and all flesh shall see the salvation of God.