Notice carefully:
Revelation 2:18-23 (KJV) [SUP]18 [/SUP]And unto the angel (pastor, preaching elder) of the church in Thyatira write; These things saith the Son of God, who hath his eyes like unto a flame of fire, and his feet are like fine brass; [SUP]19 [/SUP]I know thy works, and charity, and service, and faith, and thy patience, and thy works; and the last to be more than the first. [SUP]20 [/SUP]Notwithstanding I have a few things against thee, because thou sufferest (permits) that woman Jezebel, which calleth herself a prophetess, to teach and to seduce my servants to commit fornication, and to eat things sacrificed unto idols. [SUP]21 [/SUP]And I gave her space to repent of her fornication; and she repented not. [SUP]22 [/SUP]Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds. [SUP]23 [/SUP]And I will kill her children(those won over) with death; and all the churches shall know that I am he which searcheth the reins and hearts: and I will give unto every one of you according to your works.
This was written to the head elder (Pastor) of the church. What was happening? The pastor was allowing someone in his church (whether by permission or silent consent) to inspire the members to commit fornication (both spiritual & physical).
Here's what we have: 1) a woman possessed with an evil spirit, and, 2) this evil spirit seducing the members to sin through her. Both internal & external spiritual influence is involved. But..... only sinners can be possessed. The true church can only be externally persuaded.(inspired, tempted)
Therefore, we can conclude that evil, demonic spirits can both use people both inwardly (possession) and outwardly (listening to false inspiration, teaching, preaching, etc.). Remember, the evil spirit does not need a person to perform this.
If the Devil would dare tempt Jesus all by himself, not possessing another, can we not assume he will do it to Christ's church? Which of us lives in such an impregnable fortress of a temple that an evil spirit can't tempt us to sin? The best temptation is the kind that succeeds without us even realizing it. This is what's happening in the great falling away..... by the millions.