"Old Princeton theologian B B Warfield used the striking word repristination to sum up Paul’s way of describing regeneration. The word means ‘restoration to an original state’. The soul is made pristine or pure again. This alerts us to the fact that new birth involves restoring God’s image in us. Christ has come so that his people might also be sons of God:."
"When we consider that God alone has the power to create (as opposed to merely fashioning) things, then we see that ‘new creation’ must be his work. Regeneration is a new creation, one that surpasses even the first creation. In Exodus 4:11 God asks Moses: ‘Who gave man his mouth? Who makes him deaf or mute? Who gives him sight or makes him blind? Is it not I, the LORD?’ ‘Ears that hear and eyes that see,’ comments Proverbs 20:12, ‘the LORD has made them both.’ If this is true in the physical realm, surely it also holds good in the spiritual realm."From my book What the Bible teaches about being born again, p 36
"... new birth does not come about by natural causes or the operations of nature but by God’s immediate power. He alone has the capacity to do it. Further, it is supernatural in the sense of being beyond man’s mutilated and depraved condition by nature ... Regeneration is possible only by a supernatural work of God."
From my book What the Bible teaches about being born again, pp 34, 35