The devil at creation.

Long ago, before the earth was formed, there were no people, only innumerable angels in heaven, who ministered and served God. Among them was Lucifer, a cherub (a winged angel) who was “the seal of perfection, full of wisdom and perfect in beauty.” (Ezekiel 28:12.) He had an important task in heaven, and many looked up to him. But over time, he began to think that perhaps he could gain something from this honor; maybe he could even become greater than God. (Isaiah 14:13.)

The last great angelic battle and Satan’s ultimate expulsion from heaven are described in Revelation 12:7–12. In this passage, John sees a great war between Michael and the angels of God and the dragon (Satan) and his fallen angels or demons that will take place in the end times. Satan, in his great pride and delusion that he can be like God, will lead a final rebellion against God. It will be a cosmic mismatch. Thus, the dragon and his demons will lose the battle and be thrown out of heaven forever.

Well he couldn’t exactly be on earth before god created the earth could he? Before he made himself into Satan the Devil which means he is an opposer and resister of God, was Satan someone else:

To understand the answer to this question, a person must understand the arc- angel's spiritual status. We do this by recognizing that each name that we use to identify him tells us where and how He operates. We also must understand that God did not call everything he created in Heaven good.

A common misconception is that Satan and his demons were locked away in hell after the fall of Satan. It is clear from many Bible passages that Satan was not barred from heaven or the earth after his first rebellion, which predated the creation. In Job 1:1—2:8, he appears before God to accuse Job of ulterior motives in his worship of God. In Zechariah 3, he again appears before God to accuse Joshua, the high priest. Indeed, the name Satan means “accuser.” In Genesis, he visited the Garden of Eden and tempted Eve.

He tempted Jesus in the wilderness before Jesus began His ministry, an incident recorded in Matthew 4:1–11. The question arises that, if Satan had already rebelled and been cast from heaven before the world was created, why is he free to be in heaven and on earth?

In 2 Corinthians 12:2–3, the apostle Paul provides a major revelation that there are three “heavens.” In this passage, he seemingly talks about himself being taken up to the “third heaven” where God the Father and Jesus dwell. The second heaven is the universe or outer space, and the first is our atmosphere or air. The Bible indicates that Satan and some of his demons are allowed to move in this space (Ephesians 2:1–2; 6:12).

Lucifer

This is the name of the arc- Angel when God created him. His role was to cover ( protect) the throne of God in Heaven's eternity past. This was just before the Earth was created. His role in Heaven's eternity past also was to lead the heavenly chorus in constant praise to God. Now we know that Angels were not created with free will, but they were created to think freely.

It was the very thought of this arc- Angel that caused him to lead a rebellion against God. That thought was seated in his selfish ambition and pride. He thought he could make his throne greater than God's, besides he led a huge company of Angel in worship, it would be a simple matter of making the Heavenly chorus praise him. That is what He did, and 1/3 of the Angels in heaven followed him in his rebellion. God had no choice but to toss him out of Heaven into outter darkness along with Angels that followed him.

Satan

This name of the fallen arc- Angel, Lucifer, represented God stripping him of all authority he gave to him, for this time onward, God will always call him Satan all his Angels devil's, demons and evil spirits, There's no redemption for Satan and his Angels. Even though Satan was this fallen arc- Angel stripped of his authority, he wasn't stripped of his beauty, but he was a fallen spirit.

In this age, Satan and his highest ranking angels can still oppose the work of God and hinder the angels of God (Daniel 10:10–14) within the boundaries of the middle or second heaven. The battle recorded in Revelation 12 removes Satan and his minions from this realm.

When Satan is expelled from the middle heaven, there will be great rejoicing in heaven, since the age-old accuser will be forever banned from his mission of accusation and slander against the elect. Satan’s power and freedom will be seriously curtailed. However, the inhabitants of the earth will suffer terribly after this event, because Satan will be enraged.

He will also be aware that he only has three and a half more years until he is bound and cast into the bottomless pit. This will usher in a period of intensified suffering on earth (the Great Tribulation) during which the Antichrist violates his peace treaty with Israel, desecrates their temple, declares himself as god, and begins to systematically murder all those who refuse to worship him.

With these thoughts of greatness in his heart, he drew other angels to himself who also wanted to gain something for themselves instead of offering all honor to God. (Revelation 12:7.) Later, Lucifer (now known as Satan) also set about to deceive human beings, to draw them away from God and into his own way of pride and destruction. He succeeded in this quest at his first attempt, deceiving Adam and Eve by appealing to their sense of pride, wanting to have the same ability to discern between good and evil as God Himself.

Then Satan established himself as an accuser of mankind, and from the day he tempted Adam and Eve until the day Jesus died on the cross, he both roamed the earth and came before God’s throne in heaven to accuse people. Even the law that God gave to His people to guide them in His ways gave Satan grounds for his accusations, since no one could keep all the law without sinning. (Job 1:7; Romans 3:20.)

However, when Jesus came to earth as a man, He never sinned – not even once! (1 Peter 2:22; Hebrews 4:15.) Death had no power over him, because the wages of sin is death and it can only have a hold on someone who has committed sin. (Romans 5:12; Romans 6:23.) Jesus made a way through His flesh by the power of the Holy Spirit and completely overcame sin in the flesh in every point. By dying on the cross, He paid the price for us and made a way so that we can also follow Him.

His resurrection from the dead demonstrated His eternal triumph over Satan, sin and death. Jesus had now become an Advocate for those who want to follow Him on the same way through the flesh!