This is a great song.  Standard Tune. No Capo needed.

V1-

A5            E5
Eternal God, unchanging
D5                 A5
Mysterious and unknown
                  E5
Your boundless love, unfailing
      D5                  A5
In grace and mercy shown
      F#5            D5            F#5                  D5
Bright seraphim in ceaseless flight around Your glorious throne
      A5            E5                 D5            A5
They raise their voices day and night in praise to You alone

Ch-

A5      E5          D5                  A5      
Hallelujah, Glory be to our great God            x2


V2-

A5                  E5
Lord, we are weak and frail
D5            A5
Helpless in the storm
                  E5
Surround us with Your angels
D5                 A5
Hold us in Your arms
       F#5            D5              F#5            D5
Our cold and ruthless enemy, his pleasure is our harm
A5                   E5           D5                  A5
Rise up, O Lord, and he will flee before our sovereign God


V3-

A5                E5                 D5            A5
Let every creature in the sea and every flying bird
                        E5            D5           A5
Let every mountain, every field and valley of the earth
       F#5            D5              F#5          D5
Let all the moons and all the stars in all the universe
      A5            E5            D5            A5
Sing praises to the living God who rules them by His word