2 Chronicles 7:22

And they will say, ‘Because they forsook the Lord, the God of their fathers who brought them from the land of Egypt, and they adopted other gods and worshiped them and served them; therefore He has brought all this adversity on them.’”

Judges 2:12-13

and they forsook the Lord, the God of their fathers, who had brought them out of the land of Egypt, and followed other gods from among the gods of the peoples who were around them, and bowed themselves down to them; thus they provoked the Lord to anger.

2 Chronicles 36:17

Therefore He brought up against them the king of the Chaldeans who slew their young men with the sword in the house of their sanctuary, and had no compassion on young man or virgin, old man or infirm; He gave them all into his hand.

Jeremiah 1:16

I will pronounce My judgments on them concerning all their wickedness, whereby they have forsaken Me and have offered sacrifices to other gods, and worshiped the works of their own hands.

Lamentations 2:16-17

All your enemies
Have opened their mouths wide against you;
They hiss and gnash their teeth.
They say, “We have swallowed her up!
Surely this is the day for which we waited;
We have reached it, we have seen it.”

Lamentations 4:13-15

Because of the sins of her prophets
And the iniquities of her priests,
Who have shed in her midst
The blood of the righteous;

Ezekiel 14:23

Then they will comfort you when you see their conduct and actions, for you will know that I have not done in vain whatever I did to it,” declares the Lord God.

Ezekiel 36:17-20

“Son of man, when the house of Israel was living in their own land, they defiled it by their ways and their deeds; their way before Me was like the uncleanness of a woman in her impurity.

Daniel 9:12

Thus He has confirmed His words which He had spoken against us and against our rulers who ruled us, to bring on us great calamity; for under the whole heaven there has not been done anything like what was done to Jerusalem.

Treasury of Scripture Knowledge

Summary

And it shall be answered, Because they forsook the LORD God of their fathers, which brought them forth out of the land of Egypt, and laid hold on other gods, and worshipped them, and served them: therefore hath he brought all this evil upon them.

Bible References

Because they forsook

Judges 2:12
and they forsook the Lord, the God of their fathers, who had brought them out of the land of Egypt, and followed other gods from among the gods of the peoples who were around them, and bowed themselves down to them; thus they provoked the Lord to anger.
Jeremiah 1:16
I will pronounce My judgments on them concerning all their wickedness, whereby they have forsaken Me and have offered sacrifices to other gods, and worshiped the works of their own hands.
Lamentations 2:16
All your enemies
Have opened their mouths wide against you;
They hiss and gnash their teeth.
They say, “We have swallowed her up!
Surely this is the day for which we waited;
We have reached it, we have seen it.”
Lamentations 4:13
Because of the sins of her prophets
And the iniquities of her priests,
Who have shed in her midst
The blood of the righteous;
Ezekiel 14:23
Then they will comfort you when you see their conduct and actions, for you will know that I have not done in vain whatever I did to it,” declares the Lord God.
Ezekiel 36:17
“Son of man, when the house of Israel was living in their own land, they defiled it by their ways and their deeds; their way before Me was like the uncleanness of a woman in her impurity.

Therefore

2 Chronicles 36:17
Therefore He brought up against them the king of the Chaldeans who slew their young men with the sword in the house of their sanctuary, and had no compassion on young man or virgin, old man or infirm; He gave them all into his hand.
Daniel 9:12
Thus He has confirmed His words which He had spoken against us and against our rulers who ruled us, to bring on us great calamity; for under the whole heaven there has not been done anything like what was done to Jerusalem.

General references

Deuteronomy 29:24
All the nations will say, ‘Why has the Lord done thus to this land? Why this great outburst of anger?’
Jeremiah 22:8
“Many nations will pass by this city; and they will say to one another, ‘Why has the Lord done thus to this great city?’
Ezekiel 20:48
All flesh will see that I, the Lord, have kindled it; it shall not be quenched.”’”