1 We preach not one advent only of Christ, but a second also, far more glorious than the former. For the former gave a view of His patience; but the latter brings with it the crown of a divine kingdom. For all things, for the most part, are twofold in our Lord Jesus Christ: a twofold generation; one, of God, before the ages; and one, of a Virgin, at the close of the ages: His descents twofold; one, the unobserved, like rain on a fleece; and a second His open coming, which is to be.
In His former advent, He was wrapped in swaddling clothes in the manger; in His second, He covers Himself with light as with a garment. In His first coming, He endured the Cross, despising shame; in His second, He comes attended by a host of Angels, receiving glory. We rest not then upon His first advent only, but look also for His second. And as at His first coming we said, Blessed is He that comes in the Name of the Lord, so will we repeat the same at His second coming; that when with Angels we meet our Master, we may worship Him and say, Blessed is He that comes in the Name of the Lord.
The Saviour comes, not to be judged again, but to judge them who judged Him; He who before held His peace when judged, shall remind the transgressors who did those daring deeds at the Cross, and shall say, These things have you done, and I kept silence. Then, He came because of a divine dispensation, teaching men with persuasion; but this time they will of necessity have Him for their King, even though they wish it not.
Source: Catechetical Lectures (New Advent)