Ed Sheeran - Wayfaring Stranger chords

The song relies on just 4 chords.
F=  1-3-3-2-1-1
G#= 4-6-6-5-4-4
C=  8-10-10-9-8-8
Bb= 6-8-8-7-6-6

The sequence of chords goes:
F, G#, F, C, Bb, G#, F
[ Tab from: http://www.guitaretab.com/e/ed-sheeran/278677.html ]
Lyrics:
I'm just a poor wayfaring stranger
While traveling through, this world of woe.
Yet there's no sickness, toil nor danger
In that bright land, to which I go.
I'm going there to see my father
I'm going there no more to roam;
I'm just a going over Jordan
I'm just a going over home.