[What is the Meaning of Baptism into Christ, and on What Account Everything is There Said or Done.]
XVII. This baptism, therefore, is given into the death of Jesus: 55 Vid Rom. vi. 3 the water is instead of the burial, and the oil instead of the Holy Ghost; the seal instead of the cross; the ointment is the confirmation of the confession; the mention of the Father as of the Author and Sender; the joint mention of the Holy Ghost as of the witness; the descent into the water the dying together with Christ; the ascent out of the water the rising again with Him. The Father is the God over all; Christ is the only-begotten God, the beloved Son, the Lord of glory; the Holy Ghost is the Comforter, who is sent by Christ, land taught by Him, and proclaims Him.
[17] Ἔστι τοίνυν τὸ μὲν βάπτισμα εἰς τὸν θάνατον τοῦ Υἱοῦ διδόμενον, τὸ δὲ ὕδωρ ἀντὶ ταφῆς, τὸ ἔλαιον ἀντὶ Πνεύματος ἁγίου, ἡ σφραγὶς ἀντὶ τοῦ σταυροῦ, τὸ μύρον βεβαίωσις τῆς ὁμολογίας. Τοῦ Πατρὸς ἡ μνήμη ὡς αἰτίου καὶ ἀποστολέως, τοῦ Πνεύματος ἡ συμπαράληψις ὡς μάρτυρος. Ἡ κατάδυσις τὸ συναποθανεῖν, ἡ ἀνάδυσις τὸ συναναστῆναι. Πατὴρ ὁ ἐπὶ πάντων Θεός, Χριστὸς ὁ μονογενὴς Θεός, ὁ ἀγαπητὸς Υἱός, ὁ τῆς δόξης Κύριος, Πνεῦμα ἅγιον ὁ παράκλητος τὸ ὑπὸ Χριστοῦ πεμπόμενον καὶ ὑπ' ἐκείνου διδασκόμενον καὶ ἐκεῖνον κηρύττον.