The power of Satan cannot harm true believers

Any attempts made by those working for Satan shall not harm believers. The only exception is when God wants to teach us something about ourselves such as in Job, but even then, believers cannot be hurt without God's permission. Deut. 28:7 "7 The Lord will cause your enemies who rise against you to be defeated before your face; they shall come out against you one way and flee before you seven ways." Psalm 3 1 "Lord, how they have increased who trouble me! Many are they who rise up against me. 2 Many are they who say of me, There is no help for him in God. Selah 3 But You, O Lord, are a shield for me, My glory and the One who lifts up my head. 4 I cried to the Lord with my voice, And He heard me from His holy hill. Selah 5 I lay down and slept; I awoke, for the Lord sustained me. 6 I will not be afraid of ten thousands of people Who have set themselves against me all around. 7 Arise, O Lord; Save me, O my God! For You have struck all my enemies on the cheekbone; You have broken the teeth of the ungodly. 8 Salvation belongs to the Lord. Your blessing is upon Your people. Selah" Psalm 91 1 "He who dwells in the secret place of the Most High Shall abide under the shadow of the Almighty. 2 I will say of the Lord, He is my refuge and my fortress; My God, in Him I will trust. 3 Surely He shall deliver you from the snare of the fowler And from the perilous pestilence. 4 He shall cover you with His feathers, And under His wings you shall take refuge; His truth shall be your shield and buckler. 5 You shall not be afraid of the terror by night, Nor of the arrow that flies by day, 6 Nor of the pestilence that walks in darkness, Nor of the destruction that lays waste at noonday. 7 A thousand may fall at your side, And ten thousand at your right hand; But it shall not come near you. 8 Only with your eyes shall you look, And see the reward of the wicked. 9 Because you have made the Lord, who is my refuge, Even the Most High, your dwelling place, 10 No evil shall befall you, Nor shall any plague come near your dwelling; 11 For He shall give His angels charge over you, To keep you in all your ways. 12 In their hands they shall bear you up, Lest you dash your foot against a stone. 13 You shall tread upon the lion and the cobra, The young lion and the serpent you shall trample underfoot. 14 Because he has set his love upon Me, therefore I will deliver him; I will set him on high, because he has known My name. 15 He shall call upon Me, and I will answer him; I will be with him in trouble; I will deliver him and honor him. 16 With long life I will satisfy him, And show him My salvation. There are many Psalms describing the protection of the righteous from evil. Any attempts made to curse believers or torment them with evil will utterly fail. Neither will anything that will hinder their salvation. John 10:27-29 " 27 My sheep hear My voice, and I know them, and they follow Me. 28 And I give them eternal life, and they shall never perish; neither shall anyone snatch them out of My hand. 29 My Father, who has given them to Me, is greater than all; and no one is able to snatch them out of My Father"s hand." Mark 16:17 "These miraculous signs will accompany those who believe: They will cast out demons in my name, and they will speak in new languages." Therefore believers have authority to cast out demons since Satan has already been defeated. Luke 10:19 "Look, I have given you authority over all the power of the enemy, and you can walk among snakes and scorpions and crush them. Nothing will injure you." That being said, nothing done shall spiritually injure believers.