McCulloch wrote:
In what sense do Christians claim to have become born anew?
Anyone can make the claim
Do the foolish become wise?
Yes, no eventually..all of the above. The wisdom of the cross is foolishness to those who are perishing, though. It is where Rom 12:1-2 begins.
Rom 12:1Therefore, I urge you, brothers, in view of God's mercy, to offer your bodies as living sacrifices, holy and pleasing to God—this is your spiritual act of worship. 2Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is—his good, pleasing and perfect will.
Does the person get a new personality? What?
It's an internal rebirth. It doesn't always have to show in the personality, but uslly does.