To them it was revealed, that not to themselves, but to you, did they minister these things, which now have been announced to you through those who preached the Gospel to you by the Holy Spirit sent out from heaven; which things angels desire to look into.

 (ii) Another way to put that is to say that this rebirth is the work of the Spirit ( John 3:1-15). It happens to a man, not by his own effort, but when he yields himself to be possessed and re-created by the Spirit within him. 