Satan is the father of all lies. Lying and deceiving is his his main tool and weapon against the kingdom of God and the souls of men. Every sin is preceded by a lie or many lies. A lie is what makes that which is forbidden desirable. Our greatest defense against this formidable foe is an intimate knowledge of the Word of God. Casual knowledge of the Word of God makes a person more susceptible to the devil's lies. Intimate knowledge of the Word of God only comes from personal reading and study. Intimate knowledge of the Word of God is a body of understanding, not just a database of facts.