The Good Book

Hello,
I am looking for an old reggae song where the lyric goes “It’s written in the Good Book”, referring to the bible I believe. I used to sing that song many years ago but some how lost track of the name of the group who sang it. I believe it was a group who sang it. This song goes back to the early 70’s I believe. Nice reggae melody.
Can you help me find that song?

Thank you
Lucas

did you have this song or was it on the radio? Was the group of guys or girls or both?