27 And should you ever hear any say that the kingdom of Christ shall have an end, abhor the heresy; it is another head of the dragon, lately sprung up in. A certain one has dared to affirm, that after the end of the world Christ shall reign no longer; he has also dared to say, that the Word having come forth from the Father shall be again absorbed into the Father, and shall be no more; uttering such blasphemies to his own perdition. For he has not listened to the Lord, saying, The Son abides for ever. He has not listened to Gabriel, saying, And He shall reign over the house of Jacob for ever, and of His kingdom there shall be no end. Consider this text.
Heretics of this day teach in disparagement of Christ, while Gabriel the Archangel taught the eternal abiding of the Saviour; whom then will you rather believe? Will you not rather give credence to Gabriel? Listen to the testimony of Daniel in the text; I saw in a vision of the night, and behold, one like the Son of Man came with the clouds of heaven, and came to the Ancient of days.....And to Him was given the honour, and the dominion, and the kingdom: and all peoples, tribes, and languages shall serve Him; His dominion is an everlasting dominion, which shall not pass away, and His kingdom shall not be destroyed. These things rather hold fast, these things believe, and cast away from you the words of heresy; for you have heard most plainly of the endless kingdom of Christ.
Source: Catechetical Lectures (New Advent)