12 important things about demons and angels by Kuyper and Kreeft

Abraham Kuyper was a Dutch Calvinist statesman and theologian; Peter Kreeft is a Roman Catholic, a convert from Reformed Church in America.

Demons--

1. There exists a spiritual world outside of and apart from our human race.

2. There are two hosts or groups of these spirits, namely angels and demons.

3. The host of demons is subject to the rule of Satan.

4. Both angels and demons have powers, gifts and talents that they received from their Creator.

5. These spiritual beings have been called to use their powers and gifts in the service of God, not only to praise Him, but also as instruments for the development of His Kingdom.

6. These spirits exert all kinds of influence on this earth, not only in the spiritual realm, but just as much in the physical, visible and material realm.

7. After their fall, the demons have misused their powers in order to destroy both this earth and our human race.

8. Until the coming of Jesus and with the exception of Israel, these demons had established the kingdom of Satan over the peoples and nations that made Satan in effect the ruler of the world.

9. Christ has come in order to destroy the works of the devil and to establish Himself as Head and King over this world.

10. The temptations of Christ in the wilderness and the gradual casting out of demons must be understood in the context of that struggle.

11. The power of Satan was broken down in principle during this struggle, so that Jesus could exclaim, “I saw Satan fall like lightning from heaven” (Luke 10:18).

12. The outpouring of the Holy Spirit at Pentecost introduced into this world a holy spiritual force that was designed to ceaselessly push back that demonic atmosphere that had for so long oppressed the life of the nations.

You can do greater things than Christ, by Abraham Kuyper

Angels--

1. They really exist. Not just in our minds, or our myths, or our symbols, or our culture. They are as real as your dog, or your sister, or electricity.
2. They’re present, right here, right now, right next to you, reading these words with you.
3. They’re not cute, cuddly, comfortable, chummy, or “cool”. They are fearsome and formidable. They are huge. They are warriors.
4. They are the real “extra-terrestrials”, the real “Super-men”, the ultimate aliens. Their powers are far beyond those of all fictional creatures.
5. They are more brilliant minds than Einstein.
6. They can literally move the heavens and the earth if God permits them.
7. There are also evil angels, fallen angels, demons, or devils. These too are not myths. Demon possessions, and exorcisms, are real.
8. Angels are aware of you, even though you can’t usually see or hear them. But you can communicate with them. You can talk to them without even speaking.
9. You really do have your very own “guardian angel”. Everybody does.
10. Angels often come disguised. “Do not neglect hospitality, for some have entertained angels unawares”—that’s a warning from life’s oldest and best instruction manual.
11. We are on a protected part of a great battlefield between angels and devils, extending to eternity.
12. Angels are sentinels standing at the crossroads where life meets death. They work especially at moments of crisis, at the brink of disaster—for bodies, for souls, and for nations.

Angels, the 12 most important things by Peter Kreeft