We have before us in the Word of God instances of heavenly agencies working on the minds of kings and rulers, while at the same time satanic agencies were also at work on their minds. No human eloquence, in strongly set forth human opinions, can change the working of satanic agencies. Satan seeks continually to block the way, so that the truth shall be bound about by human devising, and those who have light and knowledge are in the greatest danger unless they constantly consecrate themselves to God, humiliating self, and realizing the peril of the times. (CTr 368.2)

Heavenly beings are appointed to answer the prayers of those who are working unselfishly for the interests of the cause of God. The very highest angels in the heavenly courts are appointed to work out the prayers that ascend to God for the advancement of the cause of God. Each angel has a particular post of duty, and is not permitted to leave for any other place. If an angel should leave, the powers of darkness would gain an advantage.... (CTr 368.3)

Day by day the conflict between good and evil is going on.... As a people we do not understand as we should the great conflict going on between invisible agencies, the controversy between loyal and disloyal angels. Evil angels are constantly at work, planning their line of attack, controlling as commanders, kings, and rulers, the disloyal human forces. (CTr 368.4)

I call upon you who are not ready for the last great controversy to wake up. You are not watching for that which is soon coming upon the earth. Human instrumentalities under the control of fallen angels are seeking to gather in their harvest. Those who would find themselves under the protection of the angels of God must live wholly for God′s glory, prepared to stand in their lot and in their place.... (CTr 368.5)

Over every person good and evil angels strive. It is the person himself who determines which shall win. I call upon the ministers of Christ to press home upon the understanding of all who come within the reach of their voice the truth of the ministration of angels. Do not indulge in fanciful speculations. The written Word is our only safety. We must pray as did Daniel, that we may be guarded by heavenly intelligences. As ministering spirits, angels are sent forth to minister to those who shall be heirs of salvation. Pray ... pray as you have never prayed before. We are not prepared for the Lord′s coming. We need to make thorough work for eternity.—Letter 201, 1899. (CTr 368.6)