First, we are going to share the text of John 7:53-8:11 itself, which will then be followed by some questions from a Facebook poster, Moises Rodrigues Coimbra, with my responses, and then Old Testament Bible scholar Gleason L. Archer will address the capital punishment aspect. Lastly, a link to an extensive article on whether John 7:53-811 was an original reading.
We will explain why these twelve verses were not in the original and should not be in the main text of our modern Bible, even in square brackets like the New American Standard Bible (NASB), and the Holman Christian Standard Bible (HCSB) have them. John 7:53-8:11 should be in a footnote with an explanation because the verses are early. It is an account that sounds very much like an incident Jesus would have been involved in. As John tells us at the end of his Gospel, Jesus did many things, which no book could hold all, and far more of what Jesus did was passed by oral tradition and was not chosen by the Holy Spirit to be in the original Gospels. But that does not mean that this one cannot be in a footnote.