Why was further instruction concerning this vision necessary ?

Answer

"And I Daniel fainted, and was sick certain days; afterward I rose up, and did the king's business; and I was
astonished at the vision, but none understood it." Verse 27.

What is the very life of the Spirit?
By what did Peter, on the day of Pentecost, say that Christ had been approved by God?
How are parents instructed to bring up their children?
How did Christ treat His Father's commandments?
Is there any danger of God's chosen people forgetting Him?
How long did he continue this work there?
What is said concerning the captivity and downfall of the Papacy?

Questions & Answers are from the book Bible Readings for the Home Circle