Spiritual Warfare

2 Cor 10:3-5
For though we walk in the flesh, we do not war according to the flesh. 4 For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, 5 casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ,
NKJV

Eph 6:11-12
Put on the whole armor of God, that you may be able to stand against the wiles of the devil. 12 For we do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this age, against spiritual hosts of wickedness in the heavenly places.
NKJV

2 Cor 11:14
And no wonder! For Satan himself transforms himself into an angel of light.
NKJV

1 Peter 5:8
Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour.
(NIV)

John 10:10
The thief does not come except to steal, and to kill, and to destroy.
NKJV