Daniel is in prayer and the Lord sends an angel with an answer, but the angel is held up by a demon and they battle in the spirit realm for three weeks. And so Daniel continues his fasting and prayer oblivious of what is transpiring. Finally the angel arrives with the vision, and a story of his experience. This chapter opens the door to the spirit realm, something we don't see very much of in overt terms in the Bible. We learn that sometimes 'princes' are people but sometimes they are spirits. There are implications for this. In this chapter we learn about prayer, spiritual warfare, and something about the spiritual realm.