Hi Guest,
I couldn't find The Greatest Words Ever Spoken in the Kellys discography
Could I Forgive be the song you are looking for?
Here is the Florida Boys' rendition
https://www.youtube.com/watch?v=GCV8qCDvYi0
I FORGIVE
There was a woman brought to Jesus; taken in by sin
Cast down at His feet that day, She was guilty and condemned
the law said she should pay the price for mistakes that she had made
but her shame became rejoicing when she heard the Savior say
Chorus
I forgive you. I for give you
You are free to go your way and sin no more
Neither do I condemn you for the life that you have lived
The greatest words ever spoken; I forgive
I too came to Jesus, like that woman long ago
And I was weighted by the guilt of sin. Life's burdens laid me low
but when I met the Master, I confessed I had great needs
What He dd for her, He'll do for you. Praise the Lord, He did for me.