The argument against irresistable grace is centered in the Biblical teachings that, on the one hand, God desires everyone to be saved and has made his grace available to all people.
1 Timothy 2:3-4
This is right and is acceptable in the sight of God our Savior, who desires everyone to be saved and to come to the knowledge of the truth.
2 Peter 3:9
The Lord is not slow about his promise, as some think of slowness, but is patient with you, not wanting any to perish, but all to come to repentance.
Titus 2:11
For the grace of God has appeared, bringing salvation to all.
On the other hand, we are asked to make a choice and salvation is said to be contingent on our response.
Joshua 24:15
Now if you are unwilling to serve the Lord, choose this day whom you will serve, whether the gods your ancestors served in the region beyond the River or the gods of the Amorites in whose land you are living; but as for me and my household, we will serve the Lord.
Ezekiel 18:21-22
But if the wicked turn away from all their sins that they have committed and keep all my statutes and do what is lawful and right, they shall surely live; they shall not die. None of the transgressions that they have committed shall be remembered against them; for the righteousness that they have done they shall live.
John 1:12
But to all who received him, who believed in his name, he gave power to become children of God.
Romans 10:9
[I}f you confess with your lips that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.
The flip side of this coin is that if we don't respond or don't follow through, we won't be saved.
Matthew 7:21
Not everyone who says to me, "Lord, Lord,' will enter the kingdom of heaven, but only the one who does the will of my Father in heaven.
Matthew 24:12-13
And because of the increase of lawlessness, the love of many will grow cold. But the one who endures to the end will be saved.
1 Corinthians 9:26-27
I do not run aimlessly, nor do I box as though beating the air; but I punish my body and enslave it, so that after proclaiming to others I myself should not be disqualified.
If we can "be disqualified" or fail to "endure to the end", it stands to reason that God's grace can be resisted.
Summary
If:
- God wants everyone to be saved, and
- He has made his grace available to everyone, and
- He asks us to respond to his grace, and
- He promises salvation to those who respond but not to those who fail to respond or fail to follow through, then
it's hard to make the case that God's grace is irresistible.