He who looks behind the door is he who has stood there before.
When you think about it “projection” is really just the “logical outworking” of the biblical knowledge that “sinners are pursued by their sin.” Sort of “wherever you go, there you are”. Whatever they do, say, or go, everything is filtered by their sin. Everything they see, everything they hear. They BECOME their sin. I guess, like the KGB is alleged to have understood. You don’t need detectives people will tell you their sin. Just give them a chance. It is the secret of Jeff Epstein’s success. You will gladly share every worst sin with someone who is an even “greater sinner”. Who better to brag about sin with than a known global pedophile?