An email and my response:
Hello Mr. Adams, I read with interest your comments on Calvin's comments on John 3:16 on your web site. I was wondering what your thoughts are on Jesus' words as recorded in John 6:44: “No one can come to Me unless the Father who sent Me draws him; and I will raise him up at the last day.” (NKJV) (It is unfortunate that English editions tend to translate the Greek as "draws" rather than the more accurate "compels" — especially since it is also translated more accurately as "dragged" elsewhere.) Have you considered that perhaps Calvin's "on the other hand" was intended to recognize what the whole of scripture says about this issue? He just may have been appealing to theology that is rooted in scripture itself.