Edward T. Welch said this quote
“ The idea of sin being able to deceive us, suppressing truth so that we believe a lie, should send shivers down our spines. It is one thing to deceive other people. That is scary enough. It is even more frightening when we realize that each lie we tell leaves us more self-deceived. All practiced sin teaches us to believe lies. WE don't often consider the boomerang effect of our deception. In the end it will get us. ”