From my book: Revelation!: 1001 Bible Answers to Theological Questions (2013). Verses KJV unless specified as RSV. The book is Jeopardy-like apologetics catechism, where all the answers to questions are from Holy Scripture.
52. Falsity of the Calvinist Doctrine of Irresistible Grace
52-1. Can people refuse to listen to God’s call?
Proverbs 1:23-25 Turn you at my reproof: behold, I will pour out my spirit unto you, I will make known my words unto you. Because I have called, and ye refused; I have stretched out my hand, and no man regarded;  But ye have set at nought all my counsel, and would none of my reproof:
52-2. Can people resist God’s purpose or “counsel” for them?
Luke 7:30 But the Pharisees and lawyers rejected the counsel of God against themselves, being not baptized of him.
52-3. Did Jesus say it was possible for those to “come to” Him, who, in fact, refuse to do so?
John 5:40 (RSV) yet you refuse to come to me that you may have life.
52-4. Can human beings resist the Holy Spirit?
Acts 7:51 (RSV) You stiff-necked people, uncircumcised in heart and ears, you always resist the Holy Spirit. As your fathers did, so do you.
52-5. Do men resist God’s grace and His desire for them to repent, by their hardheartedness?
Romans 2:4-5 (RSV) . . . Do you not know that God’s kindness is meant to lead you to repentance?  But by your hard and impenitent heart you are storing up wrath for yourself on the day of wrath when God’s righteous judgment will be revealed.
52-6. Can God’s intended salvific message be thwarted due to lack of faith?
Hebrews 4:2 For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.
52-7. Can persons fail to obtain God’s grace (that is available to all) due to sin?
Hebrews 12:15 Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;
Meta Description: A brief argument from Scripture showing that the distinctive Calvinist doctrine of irresistible grace is unscriptural.
Meta Keywords: Grace, soteriology, Calvinist soteriology, irresistible grace, Calvinism, Calvinist TULIP, synergy, free will, cooperating with God, history of Doctrine, John Calvin, Protestant Reformers, St. Augustine