The tune I have always known this to is, I think, having played it a couple of times on YouTube, based on not quite accurate recollection of the hymn tune called St Bees ~~ used for hymn "Hark My Soul, It Is The Lord". Seems to me to go best, and with fewest complications like introduction of anomalous 'umm-hmm's & such, of all the tunes nominated here thus far.

~M~