I learned it from many sources: Lightnin' Hopkins, Eric Bibb, Harrison Kennedy, Barbara Dane, Taj Mahal. . .

I think I've grabbed a few verses from each of 'em and don't always sing them in the same order:

Jesus won't you come by here
Jesus won't you come by here
Jesus won't you come by here

Now is the needy time
Right now is the needy time
So Jesus won't you come by here

Listen can't you hear me call
Listen can't you hear me call
Just hopin' that you'll come by here

I'm down on my bended knee
I am right down on my knee
Prayin' won't you come by here

Even if you don't stay long
Yes even if you don't stay long
Ah Jesus won't you come by here