The man who makes the working of miracles the test of his faith will find that Satan can, through a species of deceptions, perform wonders that will appear to be genuine miracles.—Selected Messages 2:52. TR 54.2
Satan is a cunning worker, and he will bring in subtle fallacies to darken and confuse the mind and root out the doctrines of salvation. Those who do not accept the Word of God just as it reads, will be snared in his trap.—Ibid. TR 54.3
Evil angels are upon our track every moment. ...They assume new ground and work marvels and miracles in our sight. ... TR 55.1
Some will be tempted to receive these wonders as from God. The sick will be healed before us. Miracles will be performed in our sight. Are we prepared for the trial which awaits us when the lying wonders of Satan shall be more fully exhibited? Will not many souls be ensnared and taken? By departing from the plain precepts and commandments of God, and giving heed to fables, the minds of many are preparing to receive these lying wonders. We must all now seek to arm ourselves for the contest in which we must soon engage. Faith in God's word, prayerfully studied and practically applied, will be our shield from Satan's power and will bring us off conquerors through the blood of Christ.—Testimonies For The Church 1:302. TR 55.2