Our study of the devil/demons/evil spirits should be confined mainly to what Scripture has to say about them, and possibly to works which have a strong, sound, pro Scripture based viewpoint.
We recognize evil can be tricky, often dualistically posing as both scary "bad" and enticingly "good".
Seeking to either intimidate, entice, or both.
Now the serpent was more subtle than any beast of the field which the LORD God had made... <---> Genesis 3:1
Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;
And deliver them who through fear of death were all their lifetime subject to bondage. <-----> Hebrews 2:14+15
But what I do, that I will do, that I may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we.
For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
And no marvel; for Satan himself is transformed into an angel of light.
Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works. <-----> 2nd Corinthians 11:12-15
For to this end also did I write, that I might know the proof of you, whether ye be obedient in all things.
To whom ye forgive any thing, I forgive also: for if I forgave any thing, to whom I forgave it, for your sakes forgave I it in the person of Christ;
Lest Satan should get an advantage of us: for we are not ignorant of his devices. <-----> 2nd Corinthians 2:9-11
The thief comes not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly. <-----> John 10:10 (Words of Jesus)
...[The devil] was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaks a lie, he speaks of his own: for he is a liar, and the father of it. <---> John 8:44 (Words of Jesus)
For your obedience is come abroad unto all men. I am glad therefore on your behalf: but yet I would have you wise unto that which is good, and simple concerning evil. <-----> Romans 16:9
Best to spend time thinking about The Lord and His Testimony, Attributes, Blessings, Goodness, Greatness & Precious Promises.
My meditation of him shall be sweet: I will be glad in the LORD. <-----> Psalm 104:34
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. <-----> Philippians 4:8
Peace, Love & Joy in Christ's Righteousness !
wm