Submit yourselves, then, to God. Resist the devil, and he will flee from you.
1 John 4: 4
You, dear children, are from God and have overcome them, because the one who is in you is greater than the one who is in the world.
Eph 6: 10 - 12
Finally, be strong in the Lord and in his mighty power. 11 Put on the full armor of God, so that you can take your stand against the devil's schemes. 12 For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms.
1 Tim 6: 12
Fight the good fight of the faith. Take hold of the eternal life to which you were called when you made your good confession in the presence of many witnesses.
Eph 4: 27
And do not give the devil a foothold.
Mat 17: 19 - 21
Then the disciples came to Jesus in private and asked, 'Why couldn't we drive it out?' 20 He replied, 'Because you have so little faith. Truly I tell you, if you have faith as small as a mustard seed, you can say to this mountain, 'Move from here to there,' and it will move. Nothing will be impossible for you.'
2 Cor 10: 4, 5
The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. 5 We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.
1 Pet 5: 8, 9
Be alert and of sober mind. Your enemy the devil prowls around like a roaring lion looking for someone to devour. 9 Resist him, standing firm in the faith, because you know that the family of believers throughout the world is undergoing the same kind of sufferings.
2 Tim 4: 18
The Lord will rescue me from every evil attack and will bring me safely to his heavenly kingdom. To him be glory for ever and ever. Amen.
1 John 3: 8 b
The reason the Son of God appeared was to destroy the devil's work.
Col 1: 13
For he has rescued us from the dominion of darkness and brought us into the kingdom of the Son he loves.
Mark 9:29
He replied, 'This kind can come out only by prayer.' (Some manuscripts add and fasting)