I believe that our hearts can decieve us when we too quickly accept it without pondering over it. I see very often that it's easy to listen to a Bible teaching without allowing God to take full of control of your heart. The word can redeem us but too often we just process it in our minds and it doesn't sink into our hearts. When you listen to the word there has to be a transformation, a change of will, a conflict between our flesh and spirit and eventually the word convicts us. The nature of self-deception is when we node in acceptance, pay lip service, to the word and going out and forgeting all about it. Righteous living is when a word of God revives and energizes us into action.
Bini