Biblical explanation
God explicitly warned Israel: "There shall not be found among you any one... that useth divination, or an observer of times, or an enchanter, or a witch." Deuteronomy 18:10, KJV The reason is given immediately: "For all that do these things are an abomination unto the LORD." Deuteronomy 18:12, KJV Isaiah also asks: "Should not a people seek unto their God?" Isaiah 8:19, KJV Instead of seeking the dead or supernatural mediums, God's people are directed to God and His Word. The New Testament likewise records people abandoning magical practices when they accepted Christ (Acts 19:18-20). Scripture clearly rejects occult practices. It does not teach that every supernatural claim made by occult practitioners is genuine. Some may involve deception, fraud, psychological manipulation, or other explanations. But Scripture does warn that genuine supernatural deception exists. Paul says Satan can transform himself: "into an angel of light." 2 Corinthians 11:14, KJV
Key takeaway
The great controversy reveals God's character as Christ ministers as our High Priest in the heavenly sanctuary. The dead await the resurrection, Christ's return will be visible and personal, and prophecy calls believers to faithful mission rather than date-setting or fear.