It is the first time that I read that now the symbols given to the four Gospels are astrological symbols, but above all the error they make even in that, wanting to relate the animals to the sign of Scorpion.
The association of the four Gospels with animals is called Tetramorfo
By doing a little research we see something that the Protestant obvious to say, in a page about the study of art history, when referring to the Tetramorph (representation of 4 faces) we see that the symbology is much more varied.
Beyond these symbolism the four evangelists find many other meanings, related to the Mesopotamian religious and astrological traditions on which the biblical texts are constantly based. Let us not forget that a primitive religion such as the Jewish one finds its intellectual references only when the people of Israel live the exodus to which Nebuchadnezzar II sent him in 586 BC, and the consequent captivity they were to suffer in the city of Babylon. That is why some relate the symbols of the four evangelists to Babylonian Zodiacal astrology, so that the Bull of Luke relates to the sign of Taurus, The Lion of St. Mark to Leo, the eagle to Scorpius and the winged man, with Aquarius, for those were the constellations that marked the seasons at that time.They also relate to the four elements and to the four divine qualities: Love, Justice, Power and wisdom. There are more correlations with the number four: four are the rivers of Paradise, the great prophets of the Old Testament, the doctors of the Church, the parts of the world, human temperaments, virtues and cardinal points. It is therefore a universal symbolism of multiple readings
These figures associated with the Gospels are no zodiacal sign, the prophet Ezekiel himself described them in his book.:
I looked, and saw a hurricane coming from the North, and a great cloud with a blazing fire and a glare around it; and from within, out of the midst of the fire, came a light as of electro.
In the midst of the fire, I saw the figure of four living creatures, who by their appearance looked like men.
Each had four faces and four wings.
His legs were straight; his feet, like calf’s hooves, and shone with the glare of bruised bronze.
Under their wings, man’s hands appeared on the four sides; the four beings had faces and wings.
Their wings touched each other, and they did not turn when they advanced: each went straight ahead.
As to the form of their faces, they four had the face of a man, a face of a lion on the right, a face of an ox on the left, and a face of an eagle.
What did the church fathers understand about this?
Those who question and slander the Church for this have not read the works of some Church Fathers.
Saint Irenaeus of Lyon, in the second century in his work against the heretics, to give the number of the Gospels makes reference to the text of the Apocalypse, and even goes so far as to give an explanation of the Association of these figures:
The Gospels can be no less than four; for there are four regions of the world in which we dwell, and four the chief winds of the Earth, and the Church has been scattered over all the Earth; and the pillar and foundation of the Church (1 Tim 3: 15) are the Gospel and the spirit of life; therefore four are the pillars on which the incorruptible is founded and which give life to men. Because, as the artist of all things is the Word, who sits upon the cherubim (Ps 80,2), and contains in itself all things (Wis 1,7), he has given us a Gospel in four forms, bonding of one Spirit. As David says, begging him to come, “show yourself,that you sit on the Cherubim” (PS 80 , 2). The Cherubim, in fact, have manifested themselves under four aspects that are images of the activity of the son of God (Rev 4: 7): “the first living being, says [the Holy writer], resembles a lion”, to characterize his activity as a dominator and King; “the second is like a calf”, to indicate his priestly and sacrificial orientation; “the third has the face of man” to describe his manifestation when he comes into his human being; “the fourth is like an eagle in flight”, a sign of the spirit that makes his grace fly over the church-what?
Then, already in the second century we see a disciple of a disciple (St. Polycarp) of the apostle St. John describing the activity of Christ that each living being represents.
And even if he does not yet associate them with the Gospels if it is interesting to see how for example the bull symbolizes his priestly orientation, as St. Jerome will show in the fourth century.
But it will be in this doctor of the church that we see the Association of these four figures to the Gospels directly. In his prologue to Matthew’s Gospel we can read it, I quote the work of Phillips Schaff that is on the internet.