Hi, doesn't look like anyone has answered your original question of how we are born again?
First we must realize what must be "born again," way back in the Garden God told Adam if he ate of the forbidden tree he would die, but then we read he lived 930 years, so what died? It was his spirit that died, that part of us where we commune with God, his soul and flesh continued to live on after he sinned. Fast forward to where Jesus told Nicodemus he had to be born again to see and enter into the King of God, Jesus answered his question by saying we must be born again by the Spirit and water. Peter in his first epistle explains how that is accomplished, we are born again by incorruptible seed and the word of God, 1:23. Now, we are adult here so we will talk in adult terms, we were conceived in our mother's womb when our father's sperm entered into our mother's ovum and a new life commenced at that instant. There is much debate in theological circles as to what the "water" is Jesus was referring to, however "water" in the Bible is used as a type for the Word of God, so that explanition seems the most plausible. then what Peter was saying is we were born again by the sperm of the Holy Spirit uniting with the Word of God at a particular moment in our lives. Then Peter gives his testimony of what verse the Lord used in his life in the next verse where he quotes Is 40:6-8 and the tells us this is how we receive the gospel. Next we can look at when this moment happened when we read in Luke 5:8 where Peter's eyes were opened to reveal his sinfulness, since this was a transitional period he wasn't born again because Jesus hadn't died and ressurected, however after he did we read he blew on his disciples and said receive the Holy Spirit.
So let's put it all together, when we are born again our father, so to speak, is the Holy Spirit and our mother, so to speak, is the verse God used to open our eyes to reveal our need of salvation, the gospel is presented and it is then our chioce to receive Jesus Christ as our Savior and Lord or to reject the offer. Now, just as most of us know who our father and mother are, we, as born again children of God, will know our Father and the verse used to call us into the Kingdom, also most everyone knows what day they were born and we too, as children of God, will know when we were born again, the day we changed directions, called repentance in the Bible, we were walking in our sin accomplishing the desires of our flesh and then we turned the opposite direction, because our father is the Holy Spirit, and now walk in holiness.
Now, Paul tells us to make our election and calling sure, because there is a faith that is vain, ...I say this in all meekness and love, not wanting to cause doubt, but do you know the verse used by the Holy Spirit to convict you of your sinfulness and need of salvation and when were you born again?
I know this kind of teaching is not popular in the seeker friendly churches of today, but the love of Christ constrains us to ask this question in the face of the multitulde of false teachings concerning baptisimal regeneration being propagated.
Gene