For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. Ephesians 6:12.
The Lord would have our minds aroused regarding the influence of evil angels. Christ does not tell us of the danger threatening us from the attacks of the apostate foe without furnishing us with power to resist every attack…. Angelic agencies, both good and evil, are striving for the mastery, and every influence that is now exerted is to be closely investigated.54Manuscript 78, 1905.
Satan is ever on the alert to deceive and mislead. He is using every enchantment to allure men into the broad road of disobedience. He is working to confuse the senses with erroneous sentiments, and remove the landmarks by placing his false inscription on the signposts which God has established to point the right way. It is because these evil agencies are striving to eclipse every ray of light from the soul that heavenly beings are appointed to do their work of ministry, to guide, guard, and control those who shall be heirs of salvation. None need despair because of the inherited tendencies to evil, but when the Spirit of God convicts of sin, the wrongdoer must repent and confess and forsake the evil. Faithful sentinels are on guard to direct souls in right paths.55SDA Bible Commentary 6:1120.
Either the evil angels or the angels of God are controlling the minds of men. Our minds are given to the control of God, or to the control of the powers of darkness; and it will be well for us to inquire where we are standing today—whether under the bloodstained banner of Prince Emmanuel, or under the black banner of the powers of darkness.56SDA Bible Commentary 6:1120.
So long as the people of God preserve their fidelity to Him, so long as they cling by living faith to Jesus, they are under the protection of heavenly angels, and Satan will not be permitted to exercise his hellish arts upon them to their destruction.57The Review and Herald, November 19, 1908.