I saw the rapping delusion-what progress it was making, and that if it were possible it would deceive the very elect. Satan will have power to bring before us the appearance of forms purporting to be our relatives or friends now sleeping in Jesus. It will be made to appear as if these friends were present; the words that they uttered while here, with which we were familiar, will be spoken, and the same tone of voice that they had while living will fall upon the ear. All this is to deceive the saints and ensnare them into the belief of this delusion. (EW 87.1) MC VC

I saw that the saints must get a thorough understanding of present truth, which they will be obliged to maintain from the Scriptures. They must understand the state of the dead; for the spirits of devils will yet appear to them, professing to be beloved friends and relatives, who will declare to them that the Sabbath has been changed, also other unscriptural doctrines. They will do all in their power to excite sympathy and will work miracles before them to confirm what they declare. The people of God must be prepared to withstand these spirits with the Bible truth that the dead know not anything, and that they who appear to them are the spirits of devils. Our minds must not be taken up with things around us, but must be occupied with the present truth and a preparation to give a reason of our hope with meekness and fear. We must seek wisdom from on high that we may stand in this day of error and delusion. (EW 87.2) MC VC