2 Thessalonians 2:11

Therefore, for this cause, God shall send the operation of error in them, that they should believe the lie;

Romans 1:28

And even as they did not like to retain God in their knowledge, God gave them over to a perverse understanding, to do those things which are not convenient,

Ezekiel 14:9

And the prophet when he is deceived and speaks a word, I the LORD have deceived that prophet, and I will stretch out my hand upon him and will destroy him from among my people Israel.

1 Kings 22:18-22

And the king of Israel said unto Jehoshaphat, Did I not tell thee that he would not prophesy good concerning me, but evil?

2 Chronicles 18:18-22

So he said, Therefore, hear the word of the LORD; I saw the LORD sitting upon his throne, and all the host of the heavens standing on his right hand and on his left.

Psalm 81:11-12

But my people did not hearken to my voice, and Israel did not love me.

Psalm 109:17

As he loved the curse, so let it come unto him; as he delighted not in the blessing, so let it be far from him.

Isaiah 6:9-10

Then he said, Go and tell this people, Hear indeed, but do not understand; and see indeed, but do not perceive.

Isaiah 29:9-14

Become ye dumb, and make others dumb; become ye blind, and blind others: they are drunken, but not with wine; they stagger, but not with strong drink.

Isaiah 44:20

The ashes feed him; his deceived heart inclines him, that he not deliver his soul and say, Is not the lie at my right hand?

Isaiah 66:4

I also will choose their delusions and will bring their fears upon them because I called, and no one answered; I spoke, and they did not hear: but they did evil before my eyes and chose that which displeased me.

Jeremiah 27:10

For they prophesy a lie unto you, to remove you far from your land; and that I should drive you out, and ye should perish.

Ezekiel 21:29

They prophesy vanity unto thee; they divine a lie unto thee, to give thee over among the necks of the wicked who are sentenced to death, whose day is come in the time when the iniquity shall be brought to an end.

Matthew 24:5

For many shall come in my name, saying, I am the Christ, and shall deceive many.

Matthew 24:11

And many false prophets shall rise and shall deceive many.

John 12:39-43

Therefore they could not believe, because Isaiah said again,

Romans 1:21-25

because having known God, they did not glorify him as God, neither were thankful, but became vain in their imaginations, and their foolish heart was darkened.

1 Thessalonians 2:3

For our exhortation was not of error nor of uncleanness nor in guile,

1 Timothy 4:1

Now the Spirit speaks expressly, that in the latter times some shall depart from the faith, listening to spirits of error and doctrines of demons;

Treasury of Scripture Knowledge

Summary

And for this cause God shall send them strong delusion, that they should believe a lie:

Bible References

General references

Exodus 8:7
And the magicians did the same with their enchantments, and brought up frogs upon the land of Egypt.
Exodus 10:20
But the LORD hardened Pharaoh's heart, so that he would not let the sons of Israel go.
Leviticus 13:29
If a man or woman has a plague upon the head or the beard,
Deuteronomy 13:2
and the sign or the wonder comes to pass, of which he spoke unto thee, saying, Let us go after other gods, which thou hast not known, and let us serve them,
Deuteronomy 28:28
The LORD shall smite thee with madness and blindness and astonishment of heart.
Deuteronomy 29:4
Yet the LORD has not given you a heart to perceive and eyes to see and ears to hear until today.
Psalm 109:17
As he loved the curse, so let it come unto him; as he delighted not in the blessing, so let it be far from him.
Isaiah 47:12
Stand now with thine enchantments and with the multitude of thy sorceries in which thou hast laboured from thy youth; if so be thou shalt be able to better thyself, if so be thou may prevail.