The song relies on just 4 chords.
The sequence of chords goes:
F, G#, F, C, Bb, G#, F
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.