Rev 6:1

“"And when the Lamb had opened one of the seven seals, I saw, and heard one of the four living creatures saying, Come and see. And, lo, a white horse, and He who sate upon him had a bow." The first seal being opened, he says that he saw a white horse, and a crowned horseman having a bow. For this was at first done by Himself. For after the Lord ascended into heaven and opened all things, He sent the Holy Spirit, whose words the preachers sent forth as arrows reaching to the human heart, that they might overcome unbelief. And the crown on the head is promised to the preachers by the Holy Spirit. The other three horses very plainly signify the wars, famines, and pestilences announced by our Lord in the Gospel. And thus he says that one of the four living creatures said (because all four are one), "Come and see." "Come" is said to him that is invited to faith; "see" is said to him who saw not. Therefore the white horse is the word of preaching with the Holy Spirit sent into the world. For the Lord says, "This Gospel shall be preached throughout the whole world for a testimony to all nations, and then shall come the end."”

“He said, "I heard one of the four animals say, 'Come and see.' " This one animal is the whole church preaching with a great voice and inviting the church to greater faith, "Come and see!" "If anyone thirsts, let him come and drink." "Approach him and you will be illuminated." "Arise, you who sleep, arise from the dead, and Christ will illuminate you."”

“Indeed, here is indicated the good order of those in heaven, which descends from the first ranks to the second. And therefore from one figure of the four-formed living creatures, namely, from the lion, he heard the first voice that gave the command, "Come!" to the angel who mystically symbolizes the vision. The first living creature, the lion, seems to me to signify the royal intention of the apostles against the demons. Concerning them it is said, "Behold, the kings of the earth have gathered together." And again: "You will establish them as rulers over all the earth."”

“And I saw when the Lamb had opened one of the seals. Since the signs are first loosened and then the book is opened, He wisely reversed the usual order. For the Lord, by suffering and rising again, taught that He is the end of the law. And ascending into heaven, sending the Holy Spirit, He strengthened the Church with the gift of a more secret mystery. Therefore, He opened the book then, and now He loosens its seals. In the first seal, the glory of the primitive Church; in the following three, the threefold war against her; in the fifth, the glory of those who triumphed in this war; in the sixth, those things that will come in the time of the Antichrist, with a brief recapitulation of the previous ones; in the seventh, he sees the beginning of eternal rest.”

“And I heard one of the four living creatures saying: Come and see. We too are admonished with great voices of the Gospel to behold the glory of the Church.”

“And when the Lamb had opened one of the seven seals, I heard one of the four living creatures, as it were the voice of a great thunder, saying: Come, and see. The opening of a seal is the revelation of a mystery. Now since there is not one, but many mysteries, and it would be long to speak about every one of them individually, all of them can be encompassed in three kinds, namely one kind pertaining to speech, one pertaining to cognition, and one pertaining to action. Speech includes in itself all commandments. Cognition, when applied according to the rules, teaches us the forms of understanding. As for action, it is in harmony with both. After one of the seven seals has been opened, one of the four living creatures invites John, in the manner of a great thunder, to come and see, because, after the truth has been manifested, the Church that precedes, consisting of the apostles, calls to faith the one that follows.”

“QUESTION: And I saw that the Lamb had opened one of the seals. ANSWER: Since you first loose the seals before opening a book, he has reversed the normal order for a certain reason. When the Lord suffered and was resurrected, he informed us that he was the end of the law, and when he went up to heaven and sent the Holy Spirit, he strengthened the Church with the gift of a more secret mystery. Therefore he opened the book then, and now he is loosing its seals. So, in the first seal, John sees the honor of the primitive Church; in the following three, the threefold war against the Church; in the fifth, the glory of the winners in this war; in the sixth, the things that are to come in the time of the Antichrist; and, after recapitulating previous events a bit, in the seventh, he sees the beginning of eternal rest.”

“The closing and sealing of the little scroll, which contains the names of the people written in it, signifies that it is unalterable, and that their mouths are shut from any justification before God, according to what has been previously stated (Rev. 5:1). Therefore, the gradual removal of the seals signifies the gradual repetition of the boldness and intimacy toward God, which the only begotten One, having become incarnate, has made possible for us by correcting our shortcomings through His own deeds. It must be understood that the breaking of each seal signifies one of the acts performed by the Lord for our salvation, and also those carried out by Him against the spiritual enemies of our souls. For the Lord's providence toward us involves the overthrow of those powers. Let no one be amazed at those things that will happen, that the Only Begotten existed before becoming incarnate; for the works and deeds before His coming to us are shown to the divine evangelist through vision. Yet, He appears as a Lamb in the revelation, as if slain. For it is customary that what is seen by the prophets serves as a pre-announcement of things to come. Therefore, a man long ago contended with Jacob (Gen. 32:24), a type of Christ; thus, Isaiah saw the prophetess conceiving in her womb and bearing a son, whose name is also called, "Despoil Quickly, Plunder Rapidly." (Isa. 8:3) Thus Daniel saw the Son of Man, still without flesh, God, the Word coming to the Ancient of Days. (Dan. 7:13) Therefore, the first blessing, which pertains to our race through our Savior Christ, is the one that opened the first seal of the little scroll and established the beginning of leading us back to where we came from, out of the transgression in Adam, and to recover for us the lost relationship with God and to transfer our previously forbidden access into boldness. This is the bodily birth established by the Lord, which sanctified our birth so that we are no longer conceived in lawlessness and carried in sins by our mothers, but we have a holy birth of Christ through our own birth, by which the human birth is blessed. And a witness to such a noble ambition toward humanity is the divine apostle, who writes: "since your children are unclean, but now they are holy." (1 Cor. 7:14) When the first seal was opened, he said he saw a white horse coming forth from those spiritual holy beings, holding a bow; and a crown was given to him, and he went out conquering so that he might conquer. A white horse serves as a symbol of the Gospel, representing the good will to be bestowed upon humanity. The crown, on the other hand, signifies power and victory. It came forth bearing the crown with Christ, as the one who began to conquer the Devil who had enslaved our race. It is said that He came forth so that the one who conquers may be victorious. Christ was the one who conquers, so that he may conquer completely, and the symbol of victory he bore was the crown. This is the first seal.”