[Acts 2:1–11; John 7:37–52; 8:12]
The economy of our salvation is accomplished! The operation of all the Persons of the Most Holy Trinity have now come into effect to accomplish it. What God the Father has willed, the Son of God fulfilled in Himself, and the Holy Spirit has now descended in order to impart it to the faithful. For our salvation is according to the foreknowledge of God the Father, through sanctification of the Spirit, unto obedience and sprinkling of the Blood of Jesus Christ (I Pet. 1:2). For this sake we are baptized in the name of the Father, and of the Son, and of the Holy Ghost, obliged, to observe all things whatsoever I have commanded you (Matt. 28:19–20). Those who do not confess the Most Holy Trinity cannot participate in the saving action of Its Persons and thus receive salvation. Glory to the Father and to the Son and to the Holy Spirit, the Trinity one in essence and undivided, granting us confession of Itself! “O Father Almighty, and Word, and Spirit, one nature united in three Persons, transcendent and extremely divine! Into Thee have we been baptized, and Thee shall we bless throughout all ages.”
(source: St. Theophan The Recluse “Thoughts for each day of the year”)