The discussion here is focusing on individual words rather than the significance of what is stated in that verse.Any helpful insight would be thanked, and thank you for taking time to view.
1. The Second Coming of Christ will be with "power and great glory". The glory of His Father is the glory of God. And it will be for judgment.
2. Christ will be accompanied by all His holy angels. Those are the only angels in Heaven right now. The evil angels along with Lucifer were cast out of God's Heaven a long time ago.
3. What is not stated here but is stated elsewhere is that Christ will also come with all His saints (redeemed ones) at this time. And that the appearance of the angels and the saints will be as brilliant clouds surrounding Christ.
4. The Greek word which is translated as saints is actually "holy ones" and in some places it also applies to angels. While there will be huge numbers surrounding Christ, it is Christ alone who will deal with His enemies by "the word of His mouth".