How can I check whether a mental suffering is from demons or whether it is a psychosis/schizophrenia? I get medicines for schizophrenia and I've had symptoms like in the medical textbooks, so I don't know. But the voices I hear seem really devilish and sometimes I see these faces like in the Passion of The Christ movie, what happened to Judas there. Though I did not betray Christ, just had no faith sometimes. How does a checked and verified demon possession really look like?
LutherA, you are
always on a spiritual battlefield;
every believer is. The demonic is daily working to lure you into darkness. This is why we are commanded to always be on our guard.
1Pe 5:8 Be sensible and vigilant, because your adversary the Devil walks about like a roaring lion, seeking someone he may devour...
A vigilant guard is not the one who is taking a nap during his shift on duty. The vigilant guard is watching carefully every moment for any activity of the enemy. Followers of Christ must be watching carefully, they must be vigilant, because Satan and his fallen angels are constantly at work pushing, pulling, luring unwary people into darkness where they may be "devoured." It should be a given for you, then, LutherA, that Satan's demonic agents are working to bring you to destruction.
Is your struggle with schizophrenia actually demonic possession? Not necessarily. But you can bet the devil is going to try to use your schizophrenia to turn you from God into darkness.
My grandfather encountered the demonic frequently in his ministry as a revival evangelist. He wrote a book about his experiences called "Demons among Evangelicals." Scary stuff! Christians in the West have been seduced my modern secular culture to poo-poo the idea of demonic oppression/possession, but it is actually remarkably common - if my grandfather's experience is anything to go by. I would be very wary of a Christian who encourages you to turn a blind eye to the demonic. Such advice is not biblical!
If you have been born again, you have victory
in Christ over Satan and his fallen angels. You ought to respect the fact that Satan is very powerful and incredibly devious but you do not need to fear him or his demons. You have been "bought with a price," the Bible says, and have been taken out of the kingdom of darkness and placed in God's kingdom of light. You are a child of God, a joint-heir with Christ, if you are saved, and Satan no longer has any more power in your life than you choose to give him. In light of this, follow the apostle James' command:
Jas 4:6 But He gives more grace. Therefore He says, God resists the proud, but He gives grace to the humble.
Jas 4:7 Therefore submit yourselves to God. Resist the devil, and he will flee from you.
Here's the key to successfully resisting the devil: full submission to God. You must submit before you can resist; but when you
are submitted and you do resist, Satan will flee from you!
Selah.