I want to throw this out there and see what everyone thinks, since you're all thinkers and have lots of experience as believers.
The Devil/Satan did not want to serve God for 7000 years watching over humans. I believe the plan of God was to rear up sons, two different classes, from angels and men. Angels start with powers, gifts and knowledge. Being spiritual they are from heaven, immortal. But are not given to procreation. Man starts with no knowledge of good and evil but with the in-born ability and will of God to become fathers/mothers by the fact of his own fleshly creation. (the Earth/biological/physical world is all about procreation, multiplying, etc) Angels also are to learn how to become fathers by proxy, by serving, watching over and teaching humans, being in subjection to God the Father themselves. Therefore, all learn how to be Fatherly in the end through subjection to the Father.
The Devil represents the easy way. He didn't want to learn subjection to the Father and become fatherly himself through so many years watching/serving/teaching over "inferior" creatures of flesh. He was high and mighty and wanted God's glory without having to learn "obedience through the things in which he suffered" (Heb 5:8) like Jesus showed us the Way. There is only one way to partake of the the glory of the Father, that is through faith and subjection.
So it seems he went the easy way of:
Eze 28:16 money, greed, internal violence
Eze 28:17 beauty, vanity
Isa 14:13-14 self-will, glory seeking without godly character
Irenaeus:
God made man a free [agent] from the beginning, possessing his own power, even as he does his own soul, to obey the behests (ad utendum sententia) of God voluntarily, and not by compulsion of God. For there is no coercion with God, but a good will [towards us] is present with Him continually. And therefore does He give good counsel to all. And in man, as well as in angels, He has placed the power of choice (for angels are rational beings), so that those who had yielded obedience might justly possess what is good, given indeed by God, but preserved by themselves." - A.H. Book 4 Ch 37
"Man has received the knowledge of good and evil. It is good to obey God, and to believe in Him, and to keep His commandment, and this is the life of man; as not to obey God is evil, and this is his death. Since God, therefore, gave [to man] such mental power (magnanimitatem) man knew both the good of obedience and the evil of disobedience, that the eye of the mind, receiving experience of both, may with judgment make choice of the better things; and that he may never become indolent or neglectful of God’s command; and learning by experience that it is an evil thing which deprives him of life, that is, disobedience to God, may never attempt it at all, but that, knowing that what preserves his life, namely, obedience to God, is good, he may diligently keep it with all earnestness....so also does the mind, receiving through the experience of both the knowledge of what is good, become more tenacious of its preservation, by acting in obedience to God: in the first place, casting away, by means of repentance, disobedience, as being something disagreeable and nauseous; and afterwards coming to understand what it really is, that it is contrary to goodness and sweetness, so that the mind may never even attempt to taste disobedience to God....How, then, shall he be a God, who has not as yet been made a man? Or how can he be perfect who was but lately created? How, again, can he be immortal, who in his mortal nature did not obey his Maker? For it must be that thou, at the outset, shouldest hold the rank of a man, and then afterwards partake of the glory of God....Offer to Him thy heart in a soft and tractable state, and preserve the form in which the Creator has fashioned thee, having moisture in thyself, lest, by becoming hardened, thou lose the impressions of His fingers. But by preserving the framework thou shalt ascend to that which is perfect, for the moist clay which is in thee is hidden [there] by the workmanship of God. His hand fashioned thy substance; He will cover thee over [too] within and without with pure gold and silver, and He will adorn thee to such a degree, that even “the King Himself shall have pleasure in thy beauty.” But if thou, being obstinately hardened, dost reject the operation of His skill, and show thyself ungrateful towards Him, because thou wert created a [mere] man, by becoming thus ungrateful to God, thou hast at once lost both His workmanship and life. For creation is an attribute of the goodness of God; but to be created is that of human nature. If, then, thou shalt deliver up to Him what is thine, that is, faith towards Him and subjection, thou shalt receive His handiwork, and shall be a perfect work of God....If, however, thou wilt not believe in Him, and wilt flee from His hands, the cause of imperfection shall be in thee who didst not obey, but not in Him who called [thee]. For He commissioned [messengers] to call people to the marriage, but they who did not obey Him deprived themselves of the royal supper. The skill of God, therefore, is not defective, for He has power of the stones to raise up children to Abraham;4 but the man who does not obtain it, is the cause to himself of his own imperfection. Nor, [in like manner], does the light fail because of those who have blinded themselves; but while it remains the same as ever, those who are [thus] blinded are involved in darkness through their own fault." A.H. Book 4 Ch 39
"It is therefore one and the same God the Father who has prepared good things with Himself for those who desire His fellowship, and who remain in subjection to Him; and who has prepared the eternal fire for the ringleader of the apostasy, the devil, and those who revolted with him, into which [fire] the Lord has declared those men shall be sent who have been set apart by themselves on His left hand. And this is what has been spoken by the prophet, “I am a jealous God, making peace, and creating evil things;” thus making peace and friendship with those who repent and turn to Him, and bringing [them to] unity, but preparing for the impenitent, those who shun the light, eternal fire and outer darkness, which are evils indeed to those persons who fall into them.....because [the devil] was envious of God’s workmanship, and took in hand to render this [workmanship] an enmity with God. For this cause also God has banished from His presence [the devil]....but He took compassion upon man, who, through want of care no doubt, but still wickedly [on the part of another], became involved in disobedience; and He turned the enmity by which [the devil] had designed to make [man] the enemy of God, against the author of it, by removing His own anger from man, turning it in another direction, and sending it instead upon the serpent." A.H. Book 4 Ch 40
"...the Devil has become the cause of apostasy to himself and others, justly does the Scripture always term those who remain in a state of apostasy "sons of the devil" and "angels of the wicked one"... But with respect to obedience and doctrine we are not all sons of God. Those only are so who believe in Him and do His will." - A.H. Book 4, Ch 41
"as many as fear God and trust in His Son’s advent, and who through faith do establish the Spirit of God in their hearts,—such men as these shall be properly called both “pure,” and “spiritual,” and “those living to God,” because they possess the Spirit of the Father, who purifies man, and raises him up to the life of God....inevitably follows that what is strong will prevail over the weak, so that the weakness of the flesh will be absorbed by the strength of the Spirit; and that the man in whom this takes place cannot in that case be carnal, but Spiritual, because of the fellowship of the Spirit. Thus it is, therefore, that the martyrs bear their witness, and despise death, not after the infirmity of the flesh, but because of the readiness of the Spirit. For when the infirmity of the flesh is absorbed, it exhibits the Spirit as powerful; and again, when the Spirit absorbs the weakness [of the flesh], it possesses the flesh as an inheritance in itself, and from both of these is formed a living man,—living, indeed, because he partakes of the Spirit, but man, because of the substance of flesh.... the flesh possessed by the Spirit, forgetful indeed of what belongs to it, and adopting the quality of the Spirit, being made conformable to the Word of God.... A.H. Book 5 Ch 9
"As, therefore, he who has gone forward to the better things, and has brought forth the fruit of the Spirit, is saved altogether because of the communion of the Spirit; so also he who has continued in the aforesaid works of the flesh, being truly reckoned as carnal, because he did not receive the Spirit of God, shall not have power to inherit the kingdom of heaven." A.H. Book 5 Ch 11
"And through Him they shall become accustomed to partake of the glory of God the father" A.H. Book 5 Ch 35
A.H. "Against Heresies"