Once having been exposed to The Word, if any should repeatedly prove that their only purpose in joining such discussions is to pillory, insult, defame, and spit upon the Holy Word of God, then continuing to so enjoin them is an affrontery before God.
It is here where a Christian crosses the line between "witnessing" and "casting pearls before swine."
Sadly, continuing to hold up God's Word for "give me some proof" heretics like OWK to take potshots at is the latter, and ill-advised. I have watched many here on FR try to soften OWK's heart to this life-saving message, and the replies are always the same.
I pray for OWK, and all afflicted with the same malaise.
Ah... yes.
Calling those who wish to discuss the issue in good faith "swine".
Suggesting that they are infected with a malaise.
That'll help bring 'em closer to god.