Standard (EADGBE)
Note: Based off video performance. Also, all C chords could be chords as well.
Do whatever sounds better to you because I can't tell you what the correct way is.
Intro
Verse i
Be Thou my Vision O Lord of my heart
Naught be all else to me save that Thou art
Thou my best thought by day or by night
Waking or sleeping Thy presence my light
Verse ii
Riches I heed not nor mans empty praise
Thou mine inheritance now and always
Thou and Thou only first in my heart
High King of heaven my Treasure Thou art