Lucifer Desired to be Exalted Above the Only Begotten Son of God

[Lucifer] was next to Christ in the heavenly courts, but decided that he was entitled to a higher position. — {25 LtMs, Lt 156, 1910}

Satan's dissatisfaction first commenced in heaven because he could not be first and highest in command —equal with God, exalted above Christ. He rebelled and lost his estate; and he, and those who sympathized with him, were turned out of heaven. — {1T 293.3}

Let everyone read in regard to Lucifer who, because of great glory given him, wanted the place of Christ. — {17LtMs, Ms 237, 1902, par. 14}

When God would not concede to Satan’s claim to a place above His only begotten Son, Satan rebelled. There was war in heaven, and he was cast out. He pressed his claim to be placed above Christ, but the warfare resulted in his losing his position in the heavenly courts. — {25LtMs, Lt 132, 1910, par. 4} 

[Satan] He occupied a special, exalted position in the heavenly courts. He must have no one higher than himself. He must be next to God in efficiency. But Christ was above him, and he claimed he must be above Christ. Christ was the only begotten Son of God, united with God.  — {25LtMs, Lt 157, 1910, par. 1}