This Article Aims To Explore The Notion And The Dynamics Of Self-deception As A Part Of What We Understand As The Noetic Effects Of Sin. Firstly, We Start With A Theological Analysis Of The Consciousness Because Of The Supratemporal Nature Of The Human Heart. Secondly, Through This Analysis, We Can See The Roots Of Self-deception In The Presupposition That The Ego Is Transparent To Itself. Thirdly, One Element Of The Dynamic Of Self-deception Is The Cognitive Parallax That Shows The Distance Between Theory And Reality. Fourthly, Self-deception Can Be Formalized In Theoretical Systems And Create A Legitimizing Discourse To Support Given Positions. Finally, We Try To Redeem Self-deception Through The Revelation That Enlightens The Human Mind. KEYWORDS: Self-deception, noetic effects of sin, Augustine, Herman Dooyeweerd, epistemology, the self, modern philosophy, sensus divinitatis, consciousness, revelation