That whole concept as to how the world "protects people", isn't much different from how I want to protect myself sometimes from the things I have done in the past. When Satan tries to whisper in my ear, "You can't do that, your not qualified-remember what you have done in your past." Even my girls, when they were little - caught red handed with a crayon in hand, in front of the scribbling on the wall denied that they Ever wrote on the wall. What is it with us humans that, denial and hiding is the best way we can think of to handle past mistakes.
This stands out in stark contrast as to how God deals with our past mistakes, once we become a christian. OK - let's remember God's way are definitely not our ways!
"For just as the heavens are higher than the earth, so are my ways higher than your ways and my thoughts higher than your thoughts." Isaiah 55:9
When you become a christian, God puts you in his Witness Protection Program. He gives you a new identity in Christ, he gives you a new name -he adopts you into his own family. However wait for it- he doesn't tell you not to share with others about your past, he is not worried that your past will make him look bad! In fact, when others learn how you "used to be", and can see how God has worked an AMAZING work in your life, that is your witness to them as to how great God is!!!
"We now have this light shining in our hearts, but we ourselves are like fragile clay jars containing this great treasure. This makes it clear that our great power is from God, not from ourselves."
2 Corinthians 4:7