Revelation 9:7-9

7 The locusts resembled horses equipped for battle. On their heads was something like golden crowns. Their faces resembled the faces of people.

Horses often represent power in Biblical prophecies, so we are shown that these beings are very powerful. Even though they have great power, they do not have crowns, they only have something like crowns, so their dominion is not their own. This is because they are being controlled by our Father, they are His tools of wrath. They may believe that they are in control or that they are answering to satan or another evil force, but our Father is in complete control of everything, every creature, every war, and every natural disaster. 

These beings have faces like men, they are not men though. Think of what we have been shown here in Chapter 9, people are possessed by these beings; they believe that they are being tormented with such great fierceness that they want to die, but yet they won’t kill themselves. These beings have influence only on people; they are not allowed to harm anything but people, so their faces reflect what it is that they are created to do.  

8 They had hair like the hair of women, and their teeth were like lions' teeth.

These creatures have hair like a woman, so they may at first seem gentle and kind, but they have teeth that will absolutely tear you up! They control people, torment them, and yet the people can’t find death. Kind of like a very bad marriage, a marriage with a deceiving and wicked, and yet beautiful woman.  

9 Their breastplates (scales) resembled breastplates made of iron, and the [whirring] noise made by their wings was like the roar of a vast number of horse-drawn chariots going at full speed into battle.

Their authority to harm men who have not been sealed is absolute; it is directed from God Himself. This is why they have breastplates that resemble iron. Nothing can stop what they were created to do, Their vexing affects millions of people and it happens fast. Just as locusts fly around really fast and come out of nowhere fast, these beings are empowered to vex the people as soon as they are loosed. The effects of their power is seen and heard immediately. Just think of the news casts at this time, they will blame all of this on mental illness caused by the great war and the great natural disasters that have befallen the earth. They will say that we need money to help the tormented, because to man, money is always the answer! The governments will take over all commerce and free trade to try to support the millions of demon possessed people. Taxes will skyrocket and inflation will be devaluing all of the currencies of the earth. Money, the thing that people place so much faith in, will become useless. Governments will become useless, the second thing that people place so much faith in. But Grace will be abounding through the sealed saints. Grace will abound as we are used to provide food and water, to those in need as we await the return of our Lord, Matthew 24:45-46.