Why was Christ declared worthy to open these seals?

Answer

"Thou art worthy to take the book, and to open the seals thereof : for Thou was slain, and has redeemed us
to God by Thy blood out of every kindred, and tongue, and people, and nation." Verse 9.

What is sin declared to be?
What use of this prophecy by the Apostle Peter shows that it referred to Christ?
Were the gifts of the Spirit to continue forever?
What event does he speak of as immediately following these times of refreshing?
What was to be the nature of the next kingdom after Babylon?
What will the waiting ones say when Jesus comes?
How is this great and dreadful day described in this same prophecy?

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