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.
"The devil wouldn't be attacking you so hard if there wasn't something valuable in you. Thieves don't break into empty houses." - Matthew McConaughey

 
"The devil’s greatest trick is convincing the world that he doesn’t exist."
the devil will leave you alone when you're not a threat, doing things he's happy with being consumed by the world and for selfish reasons, because you are not a threat to his kingdom. You are going straight where he wants you to be and he has no problem with that. UNLESS.

 
One of man's greatest folly is to think they still have time

TODAY is the day of salvation

The Full Armor of God
10Finally, be strong in the Lord and in His mighty power. 11Put on the full armor of God, so that you can make your stand against the devil’s schemes. 12For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this world’s darkness, and against the spiritual forces of evil in the heavenly realms.
13Therefore take up the full armor of God, so that when the day of evil comes, you will be able to stand your ground, and having done everything, to stand. 14Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness arrayed, 15and with your feet fitted with the readiness of the gospel of peace. 16In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. 17And take the helmet of salvation and the sword of the Spirit, which is the word of God.
18Pray in the Spirit at all times, with every kind of prayer and petition. To this end, stay alert with all perseverance in your prayers for all the saints. 19Pray also for me, that whenever I open my mouth, words may be given me so that I will boldly make known the mystery of the gospel, 20for which I am an ambassador in chains. Pray that I may proclaim it fearlessly, as I should.
The Christian Soldier's Warfare
Theological Sketchbook
Ephesians 6:12
For we wrestle not against flesh and blood, but against principalities, against powers…
I. THE ENEMIES WITH WHOM, AS CHRISTIAN SOLDIERS, WE ARE CALLED TO CONTEND.
1. Spirits.
2. Wicked spirits.
3. Formidable spirits.
(1) On account of their strength.
(2) On account of their weapons.
(3) On account of their extensive influence.
(4) On account of their wiles.
II. IN WHAT MANNER WE ARE INSTRUCTED TO CONTEND WITH THEM.
1. In the armour of God.
(1) This must be all put on.
(2) We must retain it till our warfare be past.
(3) We must take and use it whenever assaulted.
2. In the spirit of prayer and watchfulness.
3. In the exercise of firm resistance. Let your resistance be -
(1) Early. At the first approach of the enemy.
(2) Courageous.
(3) Unwearied. Till you conquer.
III. THE REASONS BY WHICH WE SHOULD BE INDUCED THUS TO CONTEND.
1. Because the most important objects depend on this contention.
(1) Your steadfastness;
(2) your liberty;
(3) your glory;
(4) your eternal life.
2. Because victory is certain to the faithful soldiers of Christ.
(1) Victory over the world;
(2) victory over sin;
(3) victory over Satan;
(4) victory over tribulation;
(5) victory over death.
3. Because victory will be attended with certain glory.
(1) A glorious rest from all painful toil and contention;
(2) glorious exemption from all penal evil;
(3) glorious honours;
(4) a glorious throne, crown, kingdom.
(Theological Sketchbook.)
The Evil Angels
J. Parsons.
Ephesians 6:12
For we wrestle not against flesh and blood, but against principalities, against powers…
I. HERE ARE PRESENTED BEINGS WHOSE ATTRIBUTES ARE VERY APPALLING.
1. Actual beings, possessing an angelic order of existence.
2. Beings deeply and fearfully characterized by evil.
3. Beings who possess wide power and authority over the world.
II. THE BEINGS HERE PRESENTED ARE ENGAGED IN ACTIVE AND MALIGNANT CONFLICT AGAINST THE INTERESTS OF REDEEMED MEN.
1. Notice the manner in which that conflict is conducted. These principalities, etc., fight against the children of God through the medium of their own thoughts; as those thoughts may be influenced independent of external objects, or as those thoughts may be influenced by the thoughts and passions of other men; and by the various events and occurrences which are transpiring in this sublunary and terrestrial world. It is intended by this power and instrumentality to lead to principles, to actions, and to habits which are inconsistent with the maintenance of the Christian character.
2. Mark the spirit in which that warfare is conducted. It is precisely such as we might expect from the character and attributes of the principalities, the powers, and the rulers against whom we wrestle. It is, for instance, conducted with subtlety and cunning. We find that Satan is said to transform himself into an angel of light. Hence, again, we read of "the devices of Satan" and "the rulers of Satan" as being "the old serpent." It is, further, conducted in cruelty, Hence, we read of Satan as being "the adversary"; we read of his fiery darts; and we are told that he "goeth about as a roaring lion seeking whom he may devour." It is, again, conducted in perseverance. All the statements which are urged with regard to subtlety on the one hand, and cruelty on the other, show that there is one incessant labour, which is perfectly unvaried and unremitting on their part, to accomplish the great designs they have in view with respect to the character and the final destiny of the soul.
3. Observe for what purpose the conflict is designed. That there may be a failure on the part of the redeemed, in their character, their consistency, and their hopes; and this, under the impulse of one dark and fearful result, as bearing both upon God and upon man. As regards God, it is intended that the purpose of the Father should be foresworn; that the atonement of the Son should be inefficacious; and that the influence of the Spirit should be thwarted. And, as bearing on man, it is intended that his life should become bereft of honour, comfort, and peace; that his death should be a scene of agitation, pain, and darkness; that his judgment should he an event of threatening and bitter condemnation; that his eternity should be the habitation of torment and woe; and that over spirits, who once had the prospects of redemption, there shall be pronounced that fearful sentence, "Depart ye cursed, into everlasting fire, prepared for the devil and his angels."
III. THE KNOWLEDGE, ON THE PART OF REDEEMED MEN, OF SUCH A CONFLICT, OUGHT, AT ONCE, TO BIND ON THEE THOSE PRACTICAL IMPRESSIONS WHICH ARE ESSENTIAL TO THEIR PERSEVERANCE AND VICTORY.
1. The nature of the means of preservation.
(1) A constant and diligent attempt, in the strength of the living God, to live in practical conformity with the doctrines and precepts of the gospel.
(2) Watchfulness.
(3) Prayer.
2. The effect which these means, when used aright, will secure. That the Christian warrior, fighting against these mighty and invisible foes, shall, although faint, yet pursue, and although feeble, shall yet conquer.
(J. Parsons.)