Matthew 24:30

And then shall appear the sign of the Son of Man in heaven, that sign by which the heavenly things were made, that is, the power which the Son wrought when He hung upon the cross. And the sign shall appear in heaven, that men of all tribes who before had not believed Christianity when preached, then by that sign, acknowledging it as made plain, shall grieve and mourn for their ignorance and sins. Therefore shall they see with the bodily eyes the Son of Man, coming in human shape, in the clouds of heaven, that is, on high. As at the transfiguration, a voice came out of the cloud, so when He shall come again transformed into His glorious appearance, it shall be not on one cloud, but upon many, which shall be His chariot. And if when the Son of God went up to Jerusalem, they who loved Him spread their garments in the way, not willing that even the ass that carried Him should tread upon the earth; what wonder, if the Father and God of all should spread the clouds of heaven under the body of the Son, when He comes to the work of the consummation? And one may say, that as in the creation of man, God took clay from the earth and made man; so to manifest the glory of Christ, the Lord taking of the heaven, and of its substance, gave it a body of a bright cloud in the Transfiguration, and of bright clouds at the Consummation; wherefore it is here said, in the clouds of heaven, as it was there said, of the clay of the ground. (Gen. 2:7.) And it behoves the Father to give all such admirable gifts to the Son, because He humbled Himself; and He has also exalted Him, not only spiritually, but bodily, that He should come upon such clouds; and perhaps upon rational clouds, that even the chariot of the glorified Son of Man should not be irrational. At the first, Jesus came with that power with which He wrought signs and wonders in the people; yet was that power little in comparison of that great power with which He shall come in the end; for that was the power of one emptying Himself of power. And also, it is fitting that He should be transformed into greater glory than at the transfiguration on the mount; for then He was transfigured for the sake of three only, but in the consummation of the whole world, He shall appear in great glory, that all may see Him in glory. Or He comes every day with great power to the mind of the believer in the clouds of prophecy, that is, in the Scriptures of the Prophets and the Apostles, who utter the word of God with a meaning above human nature. Also we say that to those who understand He comes with great glory, and that this is the more seen in the second coming of the Word which is to the perfect. And so it may be, that all which the three Evangelists have said concerning Christ's coming, if carefully compared together and thoroughly examined, would be found to apply to His continual daily coming in His body, which is the Church, of which coming He said in another place, Hereafter shall ye see the Son of Man sitting on the right hand of the power of God, and coming in the clouds of heaven, (Mat. 26:6.) excepting those places in which He promises that His last coming in His own person.

(Ep. 199, 41.) The first and most apparent meaning of this is of that time when He shall come to judge the quick and the dead in His body--that body in which He sits at the right hand of the Father, in which He died and rose again and ascended into heaven. As we read in the Acts of the Apostles; He was taken up, and a cloud received Him out of their sight, (Acts 1:9.) upon which it was said by the Angels, He shall so come as ye hare seen Him go into heaven, we may reasonably believe that He will come again, not only in the same body, but also in a cloud. (ubi sup.) But because the Scriptures are to be searched, and we are not to content ourselves with the surface of them, let us look closely at what follows, When ye see all these things come to pass, know that he is near even at the door. We know then that He is near, when we see come to pass not any of the foregoing things, but all of them, among which is this that the Son of Man shall be seen coming. And he shall send his Angels, who from the four quarters of the world shall gather together His elect. All these things He does at the last hour (1 John 2:18.) coming in His members as in the clouds, or in the whole Church as in one great cloud, as now He ceases not to come. And with great power and glory, because His power and glory will seem greater in the Saints to whom He will give great power, that they may not be overcome of persecution.

The darkening of the sun, the failing of the moon, and the fall of the stars, indicate the glories of His coming.

Then He tells of fearful prodigies. What are these prodigies? "Immediately after the tribulation of those days," saith He, "the sun shall be darkened." Of the tribulation of what days doth He speak? Of those of Antichrist and of the false prophets? For there shall be great tribulation, there being so many deceivers. But it is not protracted to a length of time. For if the Jewish war was shortened for the elect's sake, much more shall this temptation be limited for these same's sake. Therefore, He said not, "after the tribulation," but Immediately "after the tribulation of those days shall the sun be darkened," for almost at the same time all things come to pass. For the false prophets and false Christs shall come and cause confusion, and immediately He Himself will be here. Because no small turmoil is then to prevail over the world. But how doth He come? The very creation being then transfigured, for "the sun shall be darkened," not destroyed, but overcome by the light of His presence; and the stars shall fall, for what shall be the need of them thenceforth, there being no night? and "the powers of Heaven shall be shaken," and in all likelihood, seeing so great a change come to pass. For if when the stars were made, they trembled and marvelled ("for when the stars were made, all angels," it is said, "praised Me with a loud voice"); much more seeing all things in course of change, and their fellow servants giving account, and the whole world standing by that awful judgment-seat, and those who have lived from Adam unto His coming, having an account demanded of them of all that they did, how shall they but tremble, and be shaken? "Then shall appear the sign of the Son of Man in Heaven;" that is, the cross being brighter than the sun, since this last will be darkened, and hide himself, and that will appear when it would not appear, unless it were far brighter than the beams of the sun. But wherefore doth the sign appear? In order that the shamelessness of the Jews may be more abundantly silenced. For having the cross as the greatest plea, Christ thus cometh to that judgment-seat, showing not His wounds only, but also the death of reproach. "Then shall the tribes mourn," for there shall be no need of an accusation, when they see the cross; and they shall mourn, that by His death they are nothing benefited; because they crucified Him whom they ought to have adored. Seest thou how fearfully He has pictured His coming? how He has stirred up the spirits of His disciples? For this reason, let me add, He puts the mournful things first, and then the good things, that in this way also He may comfort and refresh them. And of His passion He suggests to them the remembrance, and of His resurrection, and with a display of glory, He mentions His cross, so that they may not be ashamed nor grieve, whereas indeed He cometh then setting it forth for His sign. And another saith, "They shall look on Him whom they pierced." Therefore it is that they shall mourn, when they see that this is He. And forasmuch as He had made mention of the cross, He added, "They shall see the Son of Man coming," no longer on the cross, but "in the clouds of Heaven, with power and great glory." For think not, He meaneth, because thou hearest of the cross, that it is again anything mournful, for He shall come with power and great glory. But He bringeth it, that their sin may be self-condemned, as if any one who had been struck by a stone, were to show the stone itself, or his garments stained with blood. And He cometh in a cloud as He was taken up, and the tribes seeing these things mourn. Not however that the terrors shall with them proceed no further than mournings; but the mourning shall be, that they may bring forth their sentence from within, and condemn themselves.

We are invited to flock to Christ's passion wheresoever in Scripture it is read of, that through it we may be able to come to God's word. These things, therefore, shall not come to pass by any diminution of light, for in another place we read that the light of the sun shall be sevenfold; but by comparison with real light, all things shall seem dim. By the powers of heaven, we understand the bands of the Angels. Rightly does He say, the tribes of the earth, for they shall mourn who have no citizenship in heaven, but are written in earth. (Jer. 17:13.)