Classic Poem

As on a window late I cast mine eye,
I saw a vine drop grapes with J and C
Annealed on every bunch. One standing by
Asked what it meant. I (who am never loath
To spend my judgement) said, It seemed to me
To be the body and the letters both
Of Joy and Charity . Sir, you have not missed,
The man replied; it figures JESUS CHRIST .