Biblical explanation
God is repeatedly presented as uniquely knowing the human heart. says: “thou, even thou only, knowest the hearts of all the children of men” (). describes God's complete knowledge of a person's thoughts and words. Scripture never attributes this unlimited knowledge of human hearts to Satan. Satan can observe human behavior and circumstances. In the book of Job, Satan makes claims based on what he observes about Job's situation (). Satan also tempted Jesus after observing His circumstances and fasting (). There is no biblical statement saying that Satan can read everyone's thoughts. Therefore, Christians should not live in fear that Satan possesses the same kind of unlimited knowledge that belongs to God. God alone is omniscient. Satan is a powerful creature, not God.
In brief
God is repeatedly presented as uniquely knowing the human heart.
Bible references
Go deeper into this topic Where Did Evil Come From? Start the studyThis answer is written and reviewed by the Word Oasis Editorial Team, and is presented with supporting references so you can examine each passage in context. If you notice an error or unclear statement, please suggest a correction.