James R. White responding to Norman Geisler in The Potter's Freedom
"Next it is said that Calvinism undermines the motive for evangelism. Despite the popularity of this accusation, it is false. Those who evangelize out of concern for man's free will rather than out of obedience to Christ and His command, do so for the wrong reasons, and will soon be disillusioned as men reject their message and bring persecution against them.
This particular objection is most troubling to me personally. I have seen its falsehood first hand. For many years I have led volunteers in passing out Christian literature and witnessing to people who are attending the semi-annual General Conference of the Church of Jesus Christ of latter-day Saints in Salt Lake City, Utah. We are the only group who is in attendance at every single Conference. We have talked to Arminians who wonder why we bother, since 'those are the hard cases anyway.' Yes, they are the hard cases. And if I believed for a second that it was up to their 'free will' and a grace that cannot change a heart, cannot renew a mind, I would never set foot outside that place again. But I do not believe in free will, nor do I believe in a grace that is a mere helping force and not the renewing power of God. That is why we keep going. That is why we see 'hard cases' come out of Mormonism. When you believe that there is no power in heaven or on earth that can stop the Holy Spirit of God from drawing one His elect to Himself (including the will of the creature!) you can preach the truth with boldness and trust God to save His people."
-James R. White