How Is It Possible?

If Jehovah/God created the angels, and God was the only mentor and teacher of the angels. How is it possible that Lucifer, the bearer of light was able to rebel against God? If God was the only teacher that the angels never had, and he taught them all properly how is it possible that Lucifer learned of the idea of rebellion against God. How is it possible that Lucifer desired to want to take the position of God without learning the desire from God since God was their only teacher? This point and question seems to me to be impossible with the claim of God's perfection... What do you think?