1 Disciples of the New Testament and partakers of the mysteries of Christ, as yet by calling only, but ere long by grace also, make you a new heart and a new spirit, that there may be gladness among the inhabitants of heaven: for if over one sinner that repents there is joy, according to the Gospel, how much more shall the salvation of so many souls move the inhabitants of heaven to gladness. As you have entered upon a good and most glorious path, run with reverence the race of godliness.
For the Only-begotten Son of God is present here most ready to redeem you, saying, Come unto Me all that labour and are heavy laden, and I will give you rest. You that are clothed with the rough garment of your offenses, who are holden with the cords of your own sins, hear the voice of the Prophet saying, Wash you, make you clean, put away your iniquities from before My eyes: that the choir of Angels may chant over you, Blessed are they whose iniquities are forgiven, and whose sins are covered. You who have just lighted the torches of faith, guard them carefully in your hands unquenched; that He, who erewhile on this all-holy Golgotha opened Paradise to the robber on account of his faith, may grant to you to sing the bridal song.
Source: Catechetical Lectures (New Advent)