Ephesians 6:12 "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."
While we may have struggles against flesh and blood in personal relationships or in our business dealings, or courntries war against each other, this is not where our battles lie as Christians. These types of battles are human or fleshly battles and not spiritual ones.
As a Christian, our battle is with Satan and his minions. The 'dark world' refers here to those not of Christ's light, but Satan and his demons - those who follow him. Matthew Henry's online commentary says this: "The combat for which we are to be prepared is not against ordinary human enemies, not barely against men compounded of flesh and blood, nor against our own corrupt natures singly considered, but against the several ranks of devils, who have a government which they exercies in this world." Satan and his devils are roaming the earth in search of not only finding people to join their forces (in other words those who deny Christ), but also to make war against those doing the work of the Lord - God's children.
We need to be on guard for Satan's attacks. He is cunning and sneaky. He knows our weaknesses and where to hit during an attack and is not afraid to use whatever means possible to strike. He is subtle and will tempt us, try to twist God's word around to cause doubt in us, cause oppression in the church, and manyother things. Mr. Henry's commentary goes on to say: "The devils are wicked spirits, and they chiefly annoy the saints with, and provoke them to, spiritual wickednesses, pride, envy, malice, etc. Our enemies strive to prevent our ascent to heaven, to deprive us of heavenly blessings and to obstruct our communion with heaven."
The Believer's Bible Commentary by William MacDonald states: "While it is true that the [demons and evil spirits] cannot indwell a true believer, they can oppress and harass him. The Christian should not be morbidly occupied with the subject of deomonism; neither should he live in fear of demons. In the armor of God, he has all he needs to hold his ground agains their onslaughts."
So, we need not fear Satan and his minions. We have God on our side and we have the protection of the full Armour of God, as well as God Himself. However, we do need to be aware and prepared for the attacks Satan will throw at us.
Satan will attack those who are doing God's work - we are a threat to him! If we aren't doing God's work we aren't a threat to Satan, and he won't bother us. However, doing the Lord's work will bring attacks that will be used to try to keep us from doing it. Satan wants us to be separated from God, to not be focused on Him and to not do His work. Don't let Satan have that chance with you.
My friends, as we are told, put on the full armor. Stand firm. God is with us, He is for us and not against us. God will equip us to fight the good fight!