Augustine of Hippo
Catena Aurea · Lukasevangelium 21
And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; Men’s hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken. And then shall they see the Son of man coming in a cloud with power and great glory.
(ut sup.) But the words, coming in the clouds, may be taken in two ways. Either coming in His Church as it were in a cloud, as He now ceases not to come. But then it shall be with great power and majesty, for far greater will His power and might appear to His saints, to whom He will give great virtue, that they may not be overcome in such a fearful persecution. Or in His body in which He sits at His Father’s right hand He must rightly be supposed to come, and not only in His body, but also in a cloud, for He will come even as He went away, And a cloud received him out of their sight.