So then, how is it true that we who cross ourselves with three fingers crucify the Father? Is it possible that a symbol may not have an inherent absolute meaning, that it's meaning may be connected to and defined by the culture that developed it?
In like manner, in the Sign of the precious Cross, this excellent sacrament of the faith teaches us how to know a mystery. For the joining of three fingers together-the thumb, the ring finger and the little finger- confesses
the mystery of the three divine hypostases, the Father, the Son, and the Holy Spirit, one God in three Persons, while joining together the other two fingers-the forefinger and the middle finger- and extending them signifies the mystery of the Lord Jesus Christ Himself, Who is perfect God and perfect Man. Slightly bending the middle finger confesses
the mystery that the Son of God bowed the heavens and came down upon the earth and bacame man for our salvation. Thus, having joined these two fingers, we first place them on the head, or on the forehead; we confess
that He Who is our one true and eternal Head gave us Himself as head over all Churches; that is, over His body. Next, we place them on the belly, confessing
His desent to earth; we clearly proclaim His conception without seed in the most pure womb of the Mother of God and His dwelling there for nine months, for He alone passed through her womb as the sun through glass, without damaging her virginity by His birth. Then, we place them on the right shoulder; we confess
that He sits at the right hand of God the Father, until His enemies are made His footstool. Finally, we place them on the left shouder, signifying that He will come agian for judgment and will render unto those on the left everlasting punishmant, but unto those on the right everlasting life. Thus having signed ourselves with the Sign of the precious Cross, we bow before God in adoration, beseeching Him to deliver us from the lot of those on the left and to grant us His blessing.
Let every believer be not careless, nor let him brazenly cross himself as though it were nothing, but let him make the Sign of the Cross on his person with awe, with right faith
and with a cleen conscience, as the theological writings indicate. It is also written in the books of the holy fathers that if anyone crosses himself improperly, that is, if he crosses himself wrongly, out of pride or laziness, and waves his hand back and forth, the demons rejoice at such hand-waving.
When you cross yourself with three fingers you confess that the Father died on the cross as the Son. The sign of the cross is a confession of faith. When you do not cross yourself corectly, you do not confess right faith.