Who will sing the song of Moses and the Lamb on the sea of glass?

Answer

"And I saw as it were a sea of glass mingled with fire: and them that had gotten the victory over the beast,
and over his image, and over his mark, and over the number of his name, stand on the sea of glass, having
the harps of God. And they sing the song of Moses the servant of God, and the song of the Lamb, saying,
Great and marvelous are Thy works, Lord God Almighty; just and true are Thy ways, Thou King of saints.
Who shall not fear Thee, 0 Lord, and glorify Thy name? For Thou only art holy: for all nations shall come
and worship before Thee; for Thy judgments are made manifest." Rev. 15: 2-4.

How are the rise and work of this power described?
What question was asked in the vision of Daniel 8?
What will be the fifth plague?
How many of these beings did John see around the throne?
When Elijah was about to take a forty days journey, how was he strengthened for it?
To whom is the gospel the power of God unto salvation?
Who is the seed to whom this promise was made?

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