N Daniel 10:8, we read about the effect that this particular vision had on the prophet. Perhaps Daniel didn't know it, but he was in the middle of a tremendous battle. The princes of Persia & Greece (who are mentioned in this chapter) must surely have been strong & influential demons. Gabriel & Michael are archangels who were in a struggle with those demonic influences. See, it wasn’t just the ambitions of great men which brought about the rise of Persia & the eventual rise of Greece. God's agenda (& Satan's ignorant participation in it) brought these empires into being. It is obvious that Satan was opposed to seeing Daniel receive an answer to his prayers in relation to his former visions (Daniel 10:12-13). But not surprisingly, God prevailed, & Daniel did receive his answer. Daniel’s study & understanding of the Scripture drove him to pray for more understanding, & his desire was granted.
Lesson: a child of God who continues in ignorance has no spiritual power & is therefore no threat against the forces of evil. But if we walk in the light as He is in the light, we have fellowship with one another. Fellowship around what? The truth that God shares!