Satan's desire to establish a new order amongst the angels in Heaven, with himself as absolute ruler, can be found in the Hebrew Scriptures (Old Testament) and especially throughout the New Testament of Jesus' Teachings; where Jesus comes down from Heaven to educate the fallen angels about this evil world, the evil soul inside, and about Satan, the ruler of this evil world.
Just as Jesus knew Judas would betray him, reading John 6:64, "there are some of you who believe not that Jesus knew from the beginning who should betray him," so did God know from the beginning that Satan would rebel against Him. God knew when he created the other earth and the angels that Satan and one-third of the angels would rebel against Him; that's why there was a Bottomless Pit waiting for the rebels. And in the very same way, omniscience, God knows when we, the fallen angels, are ready to return home. This is all part of God's way of revealing Himself to us, without having to reveal Himself to us.
Satan was the anointed Cherub who sat above the Throne of God, receiving communication from God; reading Exodus 25:22, "and I will commune with thee from above the mercy seat." Yes, Satan received direct communication from God and then transmitted it to all the angels through Michael. For as it is on earth, so it is in heaven; no man nor angel has seen God at any time - reading 1John 4:12, "No man hath seen God at any time" - and reading John 1:18, "No man hath seen God at any time. The only begotten Son, which is in the bosom of the Father, he hath declared him." So take care my friends, "Beloved, follow not that which is evil, he that doeth evil hath not seen God."(3John 1:11)
Now Satan "was perfect in his ways from the day he was created, till iniquity was found in him."(Ezekiel 28:15) Satan was not only perfect, but "full of wisdom and perfect in beauty."(Ezekiel 28:12) He was the most beautiful to the eyes, more powerful and more wise than any of the angels, "there is no secret that they can hide from thee with thy great wisdom and understanding." Satan's abilities are far greater than any angel or group of angels.
Eventually Satan began to believe that he was the greatest and maybe deserved better. So he demonstrated the pride of his superiority and strength, and one day he began to open his mouth, speaking great things, and blasphemies against God; blaspheming God, God's Tabernacle, and the angels who dwelt in heaven. (Revelation 13:5-6)
Using his seat of communication with God wrongfully, Satan told the angels that he was their saviour and liberator; that the God above had been robbing them of their free will to choose; that the God above, which no one has ever seen, had been robbing them of independent thinking; that God demands that we believe and do everything He tells us, without question.
Satan told the angels that the invisible unseeable God had enslaved them by depriving them of certain knowledge - the knowledge of good and evil, and thereby robbing them of their free will to choose; that God had made them nothing more than automates of conformity and obedience.
Satan told the angels that God was holding them prisoner in a prison of their own beliefs, beliefs given to them by God because He doesn't want you to have the freedom of choice. The "harmony" was broken and a rebellion ensued; the angels began to choose sides.
Satan told the angels that God does not want us to grow and evolve, because God is afraid of us becoming like Him. God doesn't want our eyes to be opened and learn that we are just as powerful as He is, no, God wants us to remain as "little children", totally dependent and under his control, while He tells us what to think, say and do.
God knows all about "good & evil," but He doesn't want us to have the same power and freedom of choice. God has made us a stagnant creation, without any development or progress, designed only for God's own personal enjoyment of self-worship.
Yes the war was a war of words, and Satan was more crafty than any angel God had created; setting himself up as their liberator and saviour, as a visible God; "you will all be like Gods," the great lie he continues to use here on earth.
This is how Satan works: he starts by filling our souls with lies which then infect our righteous minds; then he uses us and those around us to further infect each others' minds; he leads us astray with twisted logic and reason - justification through rationalization.
Now there was another angel of power in heaven, and that was Michael, the angel who delivered the communications received by Satan, from God, throughout the angelic kingdom. And so Michael, from personal experience, knew that the Living God of Love would never do or say such things as Satan was claiming. And Michael gathered together the angels to oppose Satan and his followers. And Michael spoke; and Satan spoke. And Satan used his great power to perform many miracles before the angelic community, even transforming himself into a gigantic dragon, the Lizard, sitting on the Throne of God. Satan promised those who would follow him liberation from a suppressive God, power, freedom, rule, control, adoration and worship.
As the battle of righteousness and unrighteousness raged on, the angels chose sides. What ensued was a social degradation into something similar to what exists here on earth; divisions with rulers, enforcers, and an elite social hierarchy. Satan's insidious plot of establishing a new order in heaven, with himself as absolute ruler, Lord God, was well underway.
Finally, all those angels who would follow Satan stood behind him; and all the other angels who were loyal to God stood behind Michael; and in the "twinkling of an eye", Satan and his followers disappeared from sight. And they were cast down into the Bottomless Pit which had been prepared for them from the beginning.
And in heaven, Michael and the angels raised up their heads, before the Throne of God, and gave thanks and praise unto the Living God of Life, Love and Mercy; thanks and praise to a God they have never seen, but "now know for sure" that He exists; the most High God, omnipotent.
Now has come salvation and strength to the kingdom of our God, and to the power of His Christ. The accuser of our brethren has been cast out, Satan who accused us before God. Satan and his followers were doomed to fail from the beginning because they held not to the truth, but had pleasure in unrighteousness. God knows.
And harmony was restored in heaven. And behold I saw an angel come down from God, and took Satan's place, and he holds the "key" to the Bottomless Pit, where Satan and his followers have been placed for 1,000 years. And Jesus said, "Give glory to the Living God, our Father who art in Heaven, for the hour of Satan's judgment is come: and I saw Satan as lightening fall from heaven."
Understand Peter's words in 2Peter 3:8, "Beloved, be not ignorant of this one thing, that a day is with the Lord, as a thousand years; and a thousand years, as one day." That is 365 million years in the Bottomless Pit - 365,000,000 years. God knows.