One either fears or has the assistance of the Holy Spirit of Truth who helps us to recognize anything false (John 16:13).
Since we are not judges, sitting in judgment seats, we must ask God the Spirit (John 4:24) to show us the truth. That takes a childlike humility, doesn't it? Try it. It works.
If one hides in ignorance and in suspicion, one has already accepted ignorance, but why? We are either lovers of the truth or lovers of the unknown and still hidden in the obscurity of darkness, but there is the Spirit of Truth and His mission is to do exactly that - to reveal the truth about everything.
Falsehood (illusion) is temporary, but God's truth remains forever.
Since we are not judges, sitting in judgment seats, we must ask God the Spirit (John 4:24) to show us the truth. That takes a childlike humility, doesn't it? Try it. It works.