Evidently you got the wrong idea. The Strong Delusion in 2 Thessalonians is "inspired" by spiritism, Satanic energeia:
The coming of the lawless one is according to the working (1753 ἐνέργεια energeia) of Satan, with all power, signs, and lying wonders (2 Thess. 2:9 NKJ)
Spiritism is the "secret power" (3466 μυστήριον musterion) that inspires lawlessness:
For the secret power of lawlessness is already at work; but the one who now holds it back will continue to do so till he is taken out of the way (2 Thess. 2:7 NIV)
That secret power, spiritism has inspired spirit, word and spurious letters that had shaken and upset the Thessalonians the Day of Christ had left them behind:
not to be soon shaken in mind or troubled, either by spirit or by word or by letter, as if from us, as though the day of Christ had come. (2 Thess. 2:2 NKJ)
In the End Time the Holy Spirit will stop restraining Satanic energeia to deceive, and people will believe the Strong Delusion because fallen angels will be permitted to appear physically in our skies and on earth as they (the Fallen Ones, the Nephilim) did during the Days of Noah. They will be disguised as Extraterrestrials, and claim to be our Designers.
That is the demon inspired prophecy the Dragon, Beast and False prophet preach to deceive the earth to fight God at Armageddon:
In the following, the river Euphrates symbolically represents the boundary separating the spirit realm from the world, Israel's eastern most border (as per God's promises). The Kings of the East are fallen angels. The BIG LIE is "ancient alien theory" and that Yahweh God is just a competing ET leader who jealously doesn't want man to evolve. So they deceive the earth to fight God at Armageddon.
12 Then the sixth angel poured out his bowl on the great river Euphrates, and its water was dried up, so that the way of the kings from the east might be prepared.
13 And I saw three unclean spirits like frogs coming out of the mouth of the dragon, out of the mouth of the beast, and out of the mouth of the false prophet.
14 For they are spirits of demons, performing signs, which go out to the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty.
15 "Behold, I am coming as a thief. Blessed is he who watches, and keeps his garments, lest he walk naked and they see his shame."
16 And they gathered them together to the place called in Hebrew, Armageddon. (Rev. 16:12-16 NKJ)
And for this reason God will send them strong (1753 ἐνέργεια energeia) delusion, that they should believe the lie, (2 Thess. 2:11 NKJ) God sends "the energy of delusion" so those who did not receive love of God's Truth (the Bible) will believe "the BIG LIE" (2 Thess. 2:11-12), the miracle...
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