Let’s go back to the book of Genesis, where we are first introduced to the devil. In the first chapters there, Satan appears in the form of a serpent. If there is any doubt that this serpent is the devil, Revelation 20:2 removes it: “And he laid hold of the dragon, the serpent of old, who is the devil and Satan” (emphasis added).
Genesis 3:1 tells us, “The serpent was more crafty than any beast of the field which the Lord God had made.” When you think about how crafty some of God’s creatures are as they compete to survive and stalk their prey, it makes you realize how cunning Satan must be. On the other hand, Satan is not all-knowing or all-wise as God is, and we should not assume that we are at a mental disadvantage in our struggle against him. Jesus instructed us to be as “shrewd as serpents” (Matt. 10:16, emphasis added). Paul claimed that he was not ignorant of Satan’s schemes (see 2 Cor. 2:11) and that we have the “mind of Christ” (1 Cor. 2:16).
Satan launched his first-recorded fiery dart by questioning Eve about what God has said. Her response would reveal to him whether he had a chance of deceiving her into disobeying God. Satan has no avenue to deceive anyone who believes and obeys what God has said, which is why his entire strategy revolves around ideas that contradict God’s Word.
Satan asked her, “Indeed, has God said, ‘You shall not eat from any tree of the garden’?” (Gen. 3:1.) It almost sounds like an innocent question from a casual inquirer, but Satan knew exactly what his goal was.
Eve responded, “From the fruit of the trees of the garden we may eat; but from the fruit of the tree which in the middle of the garden, God has said, ‘You shall not eat from it or touch it, lest you die'” (Gen. 3:2-3).
Eve almost had it right. Actually, God never forbade them to touch the tree of the knowledge of good and evil, but only forbade them to eat from it.
Eve certainly did know enough of the truth to recognize the lie of Satan’s response: “You surely shall not die!” (Gen. 3:4). That, of course, is a blatant contradiction of what God said, and it would be unlikely that Eve would believe it outright. So Satan then sugarcoated his lie with some truth, as he often does, making it much easier to swallow. He continued: “For God knows that in the day you eat from it your eyes will be opened, and you will be like God, knowing good and evil” (Gen. 3:5).
Satan actually said three things that were true after he lied. We know that once Adam and Eve ate the forbidden fruit, their eyes were opened (see Gen. 3:7) as Satan had said. Additionally, God Himself later said that the man had become like God and that he had come to know good and evil (see Gen. 3:22). Take note: Satan often mixes truth with error in order to deceive people.
Notice also that Satan maligned God’s character. God didn’t want Adam and Eve to eat the forbidden fruit for their own wellbeing and happiness, but Satan made it sound as if God was withholding something from them that was good. The majority of Satan’s lies malign God’s character, will, and motives.
Unfortunately, Earth’s first couple rejected the truth to believe a lie, and they suffered the consequences. But notice all the elements of modern spiritual warfare in their story: Satan’s only weapon was a lie couched in truth. The humans were faced with a choice to believe what God had said or what Satan had said. Believing the truth could have been their “shield of faith,” but they never lifted it.