The Bible declares that the dead know not anything, that their thoughts have perished; they have no part in anything that is done under the sun; they know nothing of the joys or sorrows of those who were dearest to them on earth.
Furthermore, God has expressly forbidden all pretended communication with departed spirits. In the days of the Hebrews there was a class of people who claimed, as do the spiritualists of today, to hold communication with the dead. But the "familiar spirts," as these visitants from other worlds were called, are declared by the Bible to be "the spirits of devils." (Compare Numbers 25:1-3; Psalm 106:28; 1 Corinthians 10:20; revelation 16:14.) The work of dealing with familiar spirits was pronounced an abomination to the Lord, and was solemnly forbidden under penalty of death (Leviticus 19:31;20:27)....But spiritualism, which numbers its converts by hundreds of thousands, yea, by millions, which has made its way into scientific circles, which has invaded churches, and has found favor in legislative bodies, and even in the courts of kings--this mammoth deception is but a revival, in a new disguise, of the witchcraft condemned and prohibited of old. (The Great Controversy, 556)
Reflection: From the very beginning, the devil has tried to brainwash us into believing that no matter what we do, we will never die. He is a liar and deceiver.