So many things affect the way we think about Satan and demons. Some people think differently according to their views on spiritual warfare and administration of spiritual gifts. If the apostolic gifts are still applicable to Christians today, many believe that this includes the ability to command the demonic forces. Others are swayed by their views of end times and particularly whether Satan is or not hindered in his operation until the return of Christ. Regardless of the issues that divide denominations and doctrines, there are some very simple reasons why anyone with saving faith in Jesus Christ should not be scared of demonic forces.
It is true that angels, whether faithful or fallen, have extraordinary powers and abilities. From the very first chapters of Genesis it seems that Satan had the ability to project speech through a snake in the Garden of Eden. Isaiah tells us that God used an angel to wipe out an entire Assyrian army surrounding Jerusalem in the time of Hezekiah. Daniel talks of men fearing in the presence of an angel they could not see and then it seems that a battle of the spiritual forces caused a three-week delay in an angel coming to give a message to Daniel. In Psalm 103:20 the angels are called mighty ones and in 2 Peter 2:11 Peter tells us that angels are greater in power and might than humans. Angels and demons are simply superior to humans in the categories of power and ability.
The one thing that the bible makes clear is that Christ is superior to all. Angels and demons obey the commands of Christ without question. If we are in Christ, we are not only in a greater power but in the greatest power. This really should be quite enough to settle any fear for any Christian, but there are some other basic facts that Christians can know.
Paul tells us in Romans 8:37-39 that nothing can separate Christians from the love of God. Within the list of things powerless to make such a separation are angels, rulers, powers and anything else in all of creation. Both Jude 6 and 2 Thessalonians 2:6 tell us that fallen angels are restrained (or chained). They are at least limited in what they are able to do. James 2:19 tells us that it is actually the demons who shudder with fear at their coming day of final judgment. Judges 9 and the whole book of Job show us that demons are only able to operate within the framework of the sovereign will of God.
The bottom line is that demons are completely subject to sovereign will of the almighty God and they fear and completely obey the commands of The Lord Jesus Christ (Matthew 8:28-34). If this is the case, a Christian only need to remind themselves of one truth. God’s will is for Christians to grow in sanctification as we conform to the image of Christ. His will is for our good and he will never destroy or harm us. Also, in Romans 8:28-31 we read “And we know that for those who love God all things work together for good, for those who are called according to his purpose. For those whom he foreknew he also predestined to be conformed to the image of his Son, in order that he might be the firstborn among many brothers. And those whom he predestined he also called, and those whom he called he also justified, and those whom he justified he also glorified. What then shall we say to these things? If God is for us, who can be against us?”
No matter what any human or demon may do to us in this world, God is sovereign and uses all things, never for our ultimate harm, but only for our good. The answer to fearing demons is to trust Christ and give him all your allegiance no matter what. He is good. He cares. He only does good and is doing a work in us to make us like him. No demon can stop it. Nothing can stop his work in us or separate us from our sovereign God.