John 7:53-8:11 was originally not part of the Gospel of John but generally regarded as having been added sometime in the Middle Ages. The inclusion of the story, however, presents a problem, the validity of the Bible. If it doesn't belong here, is the Bible we hold accurate, and can it be trusted? God has preserved His Word in our present translations. The issue of inerrancy and preservation is often debated. So, let the Scriptures speak for themselves.