The Magnitude of Our Salvation

In 2019, the Christian Church calendar celebrated Pentecost this month. The glorious truth of what happened on that day, as recorded in Acts 2, is unintentionally given short shrift by too many Christian teachers and their pupils, mainly because they have not been taught what parts of Scripture are written TO WHOM. You may know that 1 Corinthians 10:32 sets forth the only THREE kinds of people who have ever lived on the earth: Jews, Gentiles (non-Jews), and Christians. But mankind can also be divided into TWO groups: those who could not be born again of incorruptible seed” and those who could. And that monumental Day of Pentecost is the dividing line between the two.
 
John Lynn sets forth these truths, primarily focusing on John 3:1-10, a section that has been cited countless times in “evangelistic” sermons and crusades to get people saved. But, of course, no one could be “born again” until Pentecost, so what is that section really talking about, and can you thoroughly explain it (citing the relevant verses in Psalm 2, Isaiah 26, and Ezekiel 37) to someone seeking truth?