Satan is a diligent Bible student. He knows that his time is short, and he seeks at every point to counterwork the work of the Lord upon this earth. It is impossible to give any idea of the experience of the people of God who shall be alive upon the earth when celestial glory and a repetition of the persecutions of the past are blended. They will walk in the light proceeding from the throne of God. By means of the angels there will be constant communication between heaven and earth. And Satan, surrounded by evil angels and claiming to be God, will work miracles of all kinds, to deceive, if possible, the very elect. MM 110.1
God's people will not find their safety in working miracles; for Satan will counterfeit the miracles that will be wrought. God's tried and tested people will find their power in the sign spoken of in Exodus 31:12-18. They are to take their stand on the living word, “It is written.” This is the only foundation upon which they can stand securely. Those who have broken their covenant with God will in that day be without God and without hope.—Testimonies for the Church 9:16. MM 110.2