If Agrippa says "no" and then comes back later and says "yes," then there is some reflection material that's appropriate to the subject of irresistible grace. However, Agrippa did not so far as I know. History says that he and Bernice were in an incestuous relationship at the time he said "no" to Paul.
One could claim, however, that Paul himself is an example of one who was presented the gospel, who turned it down, and who later reversed that decision and accepted it. Paul rejected the presentation of Stephen. He accepted that of The Lord himself (with an assist from Ananias.)
I think just the opposite is true X. I think the fact that a man hears the gospel yet NEVER comes to Christ reflects the doctrine of Grace.
Many say NO NO NO untill they say yes.
Did they get smarter? Holier? Or did they Pastor preaching do a "better" job? Nope Karios my friend..
Ecclesiastes 3
1 To every thing there is a season, and a time to every purpose under the heaven:
2 A time to be born, and a time to die; a time to plant, and a time to pluck up that which is planted;
After the grace of God changed his heart X...Kairos
How did Paul see it?
Ephesians 1
1 Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus:
2 Grace be to you, and peace, from God our Father, and from the Lord Jesus Christ.
3 Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ:
4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
5 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will,
6 To the praise of the glory of his grace, wherein he hath made us accepted in the beloved.