It is commonly thought that Antichrist is just a man which will serve the devil and nothing more.
But I think Antichrist is a very great (maybe even infinite) entity in the heaven and is probably much greater than the devil.
Christ can be considered as an organization, see the chapter “Christ and God” of my book New Testament Commentary by a Mathematician.
So it is likely that Antichrist is also an organization (maybe of an infinite size) in the heaven. It is just the evil political party which opposes to Christ.
I expect that there will be built a skyscraper in the New York with big letters ANTICHRIST. This will be the earthy residence of the Antichrist. And the CEO of this organization will be called the Antichrist too.
I don’t feel this wonderful after such sermons as mine, it is likely to cause certain opposition.
The devil invented “sin”, a way to misguide our brains.
“Sin” is a DoS attack. It can be reformulated in another way (even if you don’t know what “DoS attack” is):
Sin is a too hard problem which overwhelms our brains and makes us unable to think properly about other problems.
So, we can conclude that sin is necessary, because that a problem is too hard does not make an allowance to skip it in the study. Sin needs to come into the world in order to be overcome (“solved”) organizing such a relationship between us and God which make it no problem anymore.
So the existence of sin and the devil are necessary. It is a part of the plan of God.
This is the explanation why all sufferings are necessary, as sufferings are just coming through too hard problems. But no problem is too hard to not be necessary to appear to be solved.
Why the devil and sin exist?
It is a paradox that the devil and sin exist in the world created by perfect, good God.
It is usually answered that it is because of pride. But the natural question would be: Why then pride exists?
The comprehensible answer is that every problem must be solved and to be solved a problem need to appear. So sin is necessary to appear in the universe.
Read more here.