I heard this song at the first Hillsong concert I attended in Oklahoma a while back. 
It's an amazing worship song, and the song itself if pretty easy,
just repeat this as long as the Holy Spirit leads you to. :)


     A2
Hallelujah,
     D2
Hallelujah,
     F#m
Hallelujah,
C#m Bsus4 A2
Our God Reigns


Thanks,
Austin Lane
Disciple of God