From the early 70s this was recorded by some folks I knew back then. The male lead vocal was Bob (now Dr) Laurent. The group was called Good News Circle and began with Bob, his buddy Butch Hunt and their then girl-friends, later wives, Joyce and Joy when they attended Judson College in Elgin Illinois. By this album Joyce and Joy were both raising kids and Butch was about to leave to manage the whole music thing....

Bob was an incredible speaker and there is actually a short clip of him on Youtube.

Now for the song, done many times by many artists this is the version from Good News Circle:

Let There Be Peace On Earth.