This is a great song for a Sunday. It’s a Bob Marley & The Wailers tune, however, Bunny Wailer masterfully sings the lead with Peter and Bob backing and the song is written by Judy Mowatt (aka Jean Watt).
Bob Marley http://www.roots-archives.com/artist/41
Bunny Wailer http://www.roots-archives.com/artist/42
Peter Tosh http://www.roots-archives.com/artist/43
Judy Mowatt http://www.roots-archives.com/artist/16