Ezekiel 28:17 “Your heart became proud on account of your beauty, and you corrupted your wisdom because of your splendor.”
Pride, jealousy, and discontent arose in Lucifer’s heart.
We know that Satan used to be an angel who was also spiritual, but fell because of jealousy.Satan has been lost and fallen for too long, and his evil habitual tendencies are extremely deep and difficult to extricate himself.
However, God won’t abandon him forever.