Apostolic Constitutions, Book III 18

1But let him that is to be baptized be free from all iniquity; one that has left off to work sin, the friend of God, the enemy of the devil, the heir of God the Father, the fellow-heir of His Son; one that has renounced Satan, and the demons, and Satan's deceits; chaste, pure, holy, beloved of God, the son of God, praying as a son to his father, and saying, as from the common congregation of the faithful, thus: Our Father, which art in heaven, hallowed be Your name; Your kingdom come; Your will be done on earth, as it is in heaven; give us this day our daily bread; and forgive us our debts, as we forgive our debtors; and lead us not into temptation, but deliver us from the evil one: for Yours is the kingdom, and the power, and the glory, forever. Amen.