Hallelujah! (a lot of repeating)
[ Lyrics from: http://www.lyricsfreak.com/m/messiah/hallelujah_20567359.html ]
The kingdom of this world is become
The kingdom of our Lord
And Of his Christ
And of His Christ
And he shall reign for ever and ever.
King of Kings
Forever and ever! hallelujah! hallelujah!
And Lord of Lords
Forever and ever! hallelujah! hallelujah!

And so on...