2 Chronicles 7:22

And they shall answer, Because they forsook Jehovah, the God of their fathers, who 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.

Judges 2:12-13

and they forsook Jehovah, the God of their fathers, who brought them out of the land of Egypt, and followed other gods, of the gods of the peoples that were round about them, and bowed themselves down unto them: and they provoked Jehovah to anger.

2 Chronicles 36:17

Therefore he brought upon them the king of the Chaldeans, who slew their young men with the sword in the house of their sanctuary, and had no compassion upon young man or virgin, old man or hoary-headed: he gave them all into his hand.

Jeremiah 1:16

And I will utter my judgments against them touching all their wickedness, in that they have forsaken me, and have burned incense unto other gods, and worshipped the works of their own hands.

Lamentations 2:16-17

All thine enemies have opened their mouth wide against thee; They hiss and gnash the teeth; they say, We have swallowed her up; Certainly this is the day that we looked for; we have found, we have seen it.

Lamentations 4:13-15

It is because of the sins of her prophets, and the iniquities of her priests, That have shed the blood of the just in the midst of her.

Ezekiel 14:23

And they shall comfort you, when ye see their way and their doings; and ye shall know that I have not done without cause all that I have done in it, saith the Lord Jehovah.

Ezekiel 36:17-20

Son of man, when the house of Israel dwelt in their own land, they defiled it by their way and by their doings: their way before me was as the uncleanness of a woman in her impurity.

Daniel 9:12

And he hath confirmed his words, which he spake against us, and against our judges that judged us, by bringing upon us a great evil; for under the whole heaven hath not been done as hath been done upon 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 Jehovah, the God of their fathers, who brought them out of the land of Egypt, and followed other gods, of the gods of the peoples that were round about them, and bowed themselves down unto them: and they provoked Jehovah to anger.
Jeremiah 1:16
And I will utter my judgments against them touching all their wickedness, in that they have forsaken me, and have burned incense unto other gods, and worshipped the works of their own hands.
Lamentations 2:16
All thine enemies have opened their mouth wide against thee; They hiss and gnash the teeth; they say, We have swallowed her up; Certainly this is the day that we looked for; we have found, we have seen it.
Lamentations 4:13
It is because of the sins of her prophets, and the iniquities of her priests, That have shed the blood of the just in the midst of her.
Ezekiel 14:23
And they shall comfort you, when ye see their way and their doings; and ye shall know that I have not done without cause all that I have done in it, saith the Lord Jehovah.
Ezekiel 36:17
Son of man, when the house of Israel dwelt in their own land, they defiled it by their way and by their doings: their way before me was as the uncleanness of a woman in her impurity.

Therefore

2 Chronicles 36:17
Therefore he brought upon them the king of the Chaldeans, who slew their young men with the sword in the house of their sanctuary, and had no compassion upon young man or virgin, old man or hoary-headed: he gave them all into his hand.
Daniel 9:12
And he hath confirmed his words, which he spake against us, and against our judges that judged us, by bringing upon us a great evil; for under the whole heaven hath not been done as hath been done upon Jerusalem.

General references

Deuteronomy 29:24
even all the nations shall say, Wherefore hath Jehovah done thus unto this land? what meaneth the heat of this great anger?
Jeremiah 22:8
And many nations shall pass by this city, and they shall say every man to his neighbor, Wherefore hath Jehovah done thus unto this great city?
Ezekiel 20:48
And all flesh shall see that I, Jehovah, have kindled it; it shall not be quenched.

American Standard Version Public Domain