The Scriptures draw a sharp distinction between the perfect, causative foreknowledge possessed by Jehovah and the limited, derivative knowledge held by Satan and his demons. God alone “declares the end from the beginning” because He is the Author of the Divine Plan (Isaiah 46:9–10). Evil spirits, by contrast, are merely observers and students of that plan. They often appear to “predict” future events, but their knowledge comes from studying Scripture, watching human behavior, and understanding the consequences of God’s already?revealed judgments. They possess intelligence, but not inspiration; awareness, but not foreknowledge.

Satan and the fallen angels have long had access to the written Word of God, and they believe its prophecies (James 2:19). They know that whatever God has spoken will surely come to pass. Like the “wise” among God’s people who discern the “signs of the times,” Satan uses his high (though fallen) intelligence to monitor world events and the unfolding of God’s plan. Yet much of Scripture remains obscure to him because he lacks the holy spirit—the only key to understanding “the secret of the Lord” (Psalm 25:14). God does not reveal His hidden purposes to His adversaries.

This distinction helps explain passages such as 1 Samuel 28. The spirit speaking through the medium at Endor was not Samuel, but a “familiar spirit”—a demon impersonating the prophet. The accuracy of its prediction does not prove prophetic power. Satan is described as having the “power of death” (Hebrews 2:14), acting as the executioner under God’s sentence. Because he must receive permission from God to carry out the penalty (Job 1:12), he is often aware when a life is nearing its end. In Saul’s case, Satan already knew from Scripture that Saul had been rejected and that David was chosen as king. By combining this biblical knowledge with Saul’s panic and the overwhelming military situation, the demon could accurately describe what was about to happen without possessing true foreknowledge.

Matthew 8:29 also fits this pattern. When the demons cried out, “Have You come here to torment us before the time?” they were not predicting the future. They were acknowledging what God had already decreed. After their rebellion in Noah’s day, these angels were restrained in “chains of darkness” until the “judgment of the great day” (2 Peter 2:4, Jude 6). They understood from the divine plan that the Millennial Age would bring a new phase of judgment and a final decision on their case. Their words simply reflected their awareness of God’s timetable and Jesus’ authority.

Revelation 12:12 likewise shows Satan’s observational knowledge, not prophetic ability. He knows his time is short because he sees the signs of the approaching Millennial Day and the transition of dispensations. Just as Jesus taught his disciples to watch for the budding fig tree to know the end is near, Satan also monitors the fulfillment of prophecy. Realizing that his influence is nearing its expiration, he makes a desperate resistance, using “lying wonders” and “strong delusions” (2 Thessalonians 2:9–12) to maintain control.

In summary, these passages do not teach that Satan or demons possess perfect foreknowledge. Only God can proclaim “the end from the beginning” (Isaiah 46:9–10). Evil spirits possess limited, observational knowledge derived from studying Scripture, watching human behavior, and understanding the consequences of God’s revealed judgments. Their predictions are nothing but deductions. God’s foreknowledge is absolute and sovereign. The knowledge of evil spirits is always subject to God’s permission and is reactive. Scripture consistently affirms that God alone knows the hearts (Jeremiah 17:10) and God alone controls the future.

Additional Resource:
Christian Questions Podcast
Episode #1305: “How Do Satanic Demons Influence Our World?”
Establishing the origin, power and methods of dark spiritual beings
Preview Video
CQ Rewind Show Notes

PDF Booklet: Fortune Tellers and the Spirit World