"All theologians and philosophers agree that the heavenly bodies are guided and directed by certain spiritual mediums. But those spirits are superior to our minds and souls, just as the heavenly bodies are superior to other bodies, and therefore they can influence both the mind and the body of a man, so that he is persuaded and directed to perform some human act." - From The Malleus Malleficarum of Heinrich Kramer and James Sprenger, Part I. Question 2.
I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptale and perfect. - Romans 12:1-2 (ESV)
In righteousness you shall be established;
you shall be far from oppression,
for you shall not fear;
and from terror,
for it shall not come near you.
If anyone stirs up strife,
it is not from me;
whoever stirs up strife with you shall fall because of you.
Behold, I have created the smith who blows the fire of coals
and produces a weapon for it's purpose,
I have also created the ravager to destroy;
no weapon that is fashioned against you shall succeed,
and you shall refute every tongue that rises against you in judgment.
This is the heritage of the servants of the Lord and their vindication is from Me,
says the Lord. - Isaiah 54:14-17 (ESV)
"Put on the whole armor of God, that you may be able to stand against the schemes of the devil. For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.
Therefore, take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm. Stand therefore, having fastened on the belt of truth, and having put on the breastplate of righteousness, and, as shoes for your feet, having put on the readiness given by the gospel of peace.
In all circumstances take up the shield of faith, with which you can extinguish all the flaming darts of the evil one; and take the helmet of salvation, and the sword of the Spirit, which is the word of God, praying at all times in the Spirit, with all prayer and supplication for all the saints." - Ephesians 6:11-18 (ESV).
Submit yourselves therefore to God. Resist the devil, and he will flee from you. - James 4:7 (ESV)
But when you pray, go into your room and shut the door and pray to your Father who is in secret. And your Father who sees in secret will reward you. - Matthew 6:6 (ESV)