Seems like in Reformed circles the necessity of appealing to the “will” of the unbeliever has been set aside because we have been convinced of God's initial regenerating work in one who is spiritually dead (Romans 3:10-18).  God is sovereign in the salvation of the spiritually dead.  Reformers call it “Irresistible Grace.”  Jesus made it clear: “No one can come to Me unless the Father who sent Me draws him” (John 6:44).  We acknowledge the truth of God's necessary, initiating, regenerating work that alone can make the spiritually dead responsive to the gospel.  But at the same time, we must not set aside our appeal to the sinner's “will.”  We used to sing the song:

Whosoever will, whosoever will!
Send the proclamation over vale and hill;
'Tis a loving Father calls the wanderer home.
"Whosoever will may come."

This may seem paradoxical, but our evangelism must be shaped by both of these truths.  Knowing that the Spirit of God must break the rebellious heart of the unbeliever, we must also appeal to the “will” of the unbeliever.  The gospel message is an appeal to the hearts and minds of the unbeliever.  Focusing only on sovereign regeneration can make our gospel appeal cold, mechanical and lacking compassion.  We must engage the sinner with a passionate plea to be saved from eternal judgment and receive God's provision in the person and work of Jesus Christ.  The Apostle Paul put it this way: “We beg you on behalf of Christ, be reconciled to God.  God made Him who knew no sin to be sin on our behalf, so that we might become the righteousness of God in Him. (2 Corinthians 5:20-21). 

We who are biblically reformed in our understanding of the Scriptures, have no doubt concerning the necessity of the Spirit's work in taking a heart of stone and making it a heart of flesh (Ezekiel 36:26).  But at the same time, with the love of Christ, we must passionately appeal to the “will” of the unbeliever using the Scriptures to change their minds, repent and put their trust in the Lord Christ.  The Apostle Paul is an example to us:

Paul was explaining to them by solemnly bearing witness about the kingdom of God and trying to persuade them concerning Jesus, from both the Law of Moses and from the Prophets, from morning until evening.  (Acts 28:23)

My prayer for you and me this day is this:  Lord, give us the passions for souls that You have.  We're not “selling” the gospel.  We're desperate to save folks from eternal hell.  May our desperation be evident in the way we proclaim the good news of the gospel.  May we have the same “desperation” demonstrated by the Apostle: I am telling the truth in Christ, I am not lying, my conscience testifies with me in the Holy Spirit, 2 that I have great sorrow and unceasing grief in my heart. 3 For I could [a]wish that I myself were accursed, separated from Christ for the sake of my brothers (Romans 9:1-3).

Walk with the King today and be a blessing.