2 Thessalonians 2:11

Because of this, God sends them a working of error, that they should believe a lie;

Romans 1:28

Even as they refused to have God in their knowledge, God abandoned them to a reprobate mind, to do those things which are not fitting;

Ezekiel 14:9

"'"If the prophet is deceived and speaks a word, I, the LORD, have deceived that prophet, and I will stretch out my hand on him, and will destroy him from the midst of my people Israel.

1 Kings 22:18-22

The king of Israel said to Jehoshaphat, "Did I not tell you that he would not prophesy good concerning me, but evil?"

2 Chronicles 18:18-22

Micaiah said, "Therefore hear the word of the LORD: I saw the LORD sitting on his throne, and all the army of heaven standing on his right hand and on his left.

Psalm 81:11-12

But my people did not listen to my voice. Israel desired none of me.

Psalm 109:17

Yes, he loved cursing, and it came to him. He did not delight in blessing, and it was far from him.

Isaiah 6:9-10

He said, "Go, and tell this people, 'You hear indeed, but do not understand; and you see indeed, but do not perceive.'

Isaiah 29:9-14

Pause and wonder. Blind yourselves and be blind. They are drunk, but not with wine; they stagger, but not with strong drink.

Isaiah 44:20

He feeds on ashes. A deceived heart has turned him aside; and he can't deliver his soul, nor say, "Isn't there a lie in my right hand?"

Isaiah 66:4

I also will choose their delusions, and will bring their fears on them; because when I called, no one answered; when I spoke, they did not listen; but they did that which was evil in my eyes, and chose that in which I did not delight."

Jeremiah 27:10

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

Ezekiel 21:29

while they see for you false visions, while they divine lies to you, to lay you on the necks of the wicked who are deadly wounded, whose day has come in the time of the iniquity of the end.

Matthew 24:5

For many will come in my name, saying, 'I am the Messiah,' and will lead many astray.

Matthew 24:11

Many false prophets will arise, and will lead many astray.

John 12:39-43

For this cause they could not believe, for Isaiah said again,

Romans 1:21-25

Because, although they knew God, they did not glorify him as God or give him thanks, but their thinking became nonsense, and their foolish heart was darkened.

1 Thessalonians 2:3

For our exhortation is not of error, nor of uncleanness, nor in deception.

1 Timothy 4:1

But the Spirit says expressly that in later times some will fall away from the faith, paying attention to seducing spirits 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
The magicians did in like manner with their secret arts, and brought up frogs on the land of Egypt.
Exodus 10:20
But the LORD hardened Pharaoh's heart, and he did not let the children of Israel go.
Leviticus 13:29
"When a man or woman has a plague on the head or on the beard,
Deuteronomy 13:2
and the sign or the wonder come to pass, of which he spoke to you, saying, "Let us go after other gods" (which you have not known) "and let us serve them";
Deuteronomy 28:28
The LORD will strike you with madness, and with blindness, and with astonishment of heart;
Deuteronomy 29:4
but the LORD has not given you a heart to know, and eyes to see, and ears to hear, to this day.
Psalm 109:17
Yes, he loved cursing, and it came to him. He did not delight in blessing, and it was far from him.
Isaiah 47:12
"Stand now with your enchantments, and with the multitude of your sorceries, in which you have labored from your youth; if so be you shall be able to profit, if so be you may prevail.