Revelation 11:3

Since everything concerning the Lord's incarnation and administration was revealed to the evangelist in the vision, namely, the birth, the temptation, the teachings, the taunts against Him, as well as the cross, the resurrection, the second coming, and in addition the retributions for both the …

'(On this :) There come two prophets, Enoch and Elias, and these are the two olive trees he speaks of [ib. 4], even as Zacharias spoke of them [Zech. iv. 3, 11, 14]. Now concerning Elias our Lord said, Elias must come to restore all things [St. Mark, ix. 12; cp. St. Matth. xvii. 11]. Of these he says that they work miracles and signs, and send plagues upon the unbelieving [Rev. xi. 5, 6], in order that the faithful may have some respite. These two prophets will stand up against Antichrist, even as Moses and Aaron stood up against Pharaoh and the Egyptians. These things then are to be in the half of the week, when Antichrist will scatter all men, so that there shall not be found two or three together to assemble, to offer sacrifice to God. This then is to be fulfilled, that the sacrifice shall cease. When then these are killed there [ib. 7] by the false Christ, afterwards they are to stand up, in presence of many, and are to be caught upon the clouds to meet our Lord [ib. 11, 12; 1 Thess. iv. 17]. In the half of the week, said John, Enoch and Elias are to receive power [ib. 6], and are to preach a thousand two hundred and threescore days girt with sackcloth [ib. 3], and to teach repentance to the people and the Gentiles. These days are the half of the week; and these are the two olive-trees and the two candlesticks (ib. 4), as Zacharias said, Enoch and Elias. And the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them. And their dead bodies he shall cast into the streets, that is the highways, of the city [ib. 7, 8]. (On this :) Concerning this beast Daniel said, I saw indeed a beast that came up out of the bottomless pit, that is, the sea [Dan. vii. 3], and made war with the saints [ib. 21], which [beast] that horn which sprang up designates [ib. 8J. […]

It is a matter of course that His forerunners must appear first, as He says by Malachi and the angel, "I will send to you Elias the Tishbite before the day of the Lord, the great and notable day, comes; and he shall turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just, lest I come and smite the earth utterly." These, then, shall come and proclaim the manifestation of Christ that is to be from heaven; and they shall also perform signs and wonders, in order that men may be put to shame and turned to repentance for their surpassing wickedness and impiety. For John says, "And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth." That is the half of the week whereof Daniel spake. "These are the two olive trees and the two candlesticks standing before the Lord of the earth. And if any man will hurt them, fire will proceed out of their mouth, and devour their enemies; and if any man will hurt them, he must in this manner be killed. These have power to shut heaven, that it rain not in the days of their prophecy; and have power over waters, to turn them to blood, and to smite the earth with all plagues as often as they will. And when they shall have finished their course and their testimony," what saith the prophet? "the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them," because they will not give glory to Antichrist. For this is meant by the little horn that grows up. He, being now elated in heart, begins to exalt himself, and to glorify himself as God, persecuting the saints and blaspheming Christ, even as Daniel says, "I considered the horn, and, behold, in the horn were eyes like the eyes of man, and a mouth speaking great things; and he opened his mouth to blaspheme God. […]

Now, concerning the tribulation of the persecution which is to fall upon the Church from the adversary, John also speaks thus: "And I saw a great and wondrous sign in heaven; a woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars. And she, being with child, cries, travailing in birth, and pained to be delivered. And the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born. And she brought forth a man-child, who is to rule all the nations: and the child was caught up unto God and to His throne. And the woman fled into the wilderness, where she hath the place prepared of God, that they should feed her there a thousand two hundred and threescore days. And then when the dragon saw it, he persecuted the woman which brought forth the man-child. And to the woman were given two wings of the great eagle, that she might fly into the wilderness, where she is nourished for a time, and times, and half a time, from the face of the serpent. And the serpent cast (out of his mouth water as a flood after the woman, that he might cause her to be carried away of the flood. And the earth helped the woman, and opened her mouth, and swallowed up the flood which the dragon cast) out of his mouth. And the dragon was wroth with the woman, and went to make war with the saints of her seed, which keep the commandments of God, and have the testimony of Jesus." By the woman then clothed with the sun," he meant most manifestly the Church, endued with the Father's word, whose brightness is above the sun. And by the "moon under her feet" he referred to her being adorned, like the moon, with heavenly glory. And the words, "upon her head a crown of twelve stars," refer to the twelve apostles by whom the Church was founded. […]

For through the Scriptures we are instructed in two advents of the Christ and Saviour. And the first after the flesh was in humiliation, because He was manifested in lowly estate. So then His second advent is declared to be in glory; for He comes from heaven with power, and angels, and the glory of His Father. His first advent had John the Baptist as its forerunner; and His second, in which He is to come in glory, will exhibit Enoch, and Elias, and John the Divine. Behold, too, the Lord's kindness to man; how even in the last times He shows His care for mortals, and pities them. For He will not leave us even then without prophets, but will send them to us for our instruction and assurance, and to make us give heed to the advent of the adversary, as He intimated also of old in this Daniel. For he says, "I shall make a covenant of one week, and in the midst of the week my sacrifice and libation will be removed." For by one week he indicates the showing forth of the seven years which shall be in the last times. And the half of the week the two prophets, along with John, will take for the purpose of proclaiming to all the world the advent of Antichrist, that is to say, for a "thousand two hundred and sixty days clothed in sackcloth;" and they will work signs and wonders with the object of making men ashamed and repentant, even by these means, on account of their surpassing lawlessness and impiety. "And if any man will hurt them, fire will proceed out of their mouth, and devour their enemies. These have power to shut heaven, that it rain not in the days of the advent of Antichrist, and to turn waters into blood, and to smite the earth with all plagues as often as they will." And when they have proclaimed all these things they will fall on the sword, cut off by the accuser. […]