Joshua 7:12

And the children of Israel shall not be able to stand before their enemies: they shall turn their backs before their enemies, for they have made themselves accursed. I will no more be with you, except ye destroy the accursed thing from your midst.

Numbers 14:45

And the Amalekites and the Canaanites who dwelt on that hill, came down and smote them, and cut them to pieces, as far as Hormah.

Joshua 6:18

But in any wise keep from the accursed thing, lest ye make yourselves accursed in taking of the accursed thing, and make the camp of Israel a curse, and trouble it.

Judges 2:14

So the anger of the LORD was kindled against Israel, and he gave them over to plunderers, who plundered them; and he sold them into the power of their enemies round about, so that they could no longer withstand their enemies.

Deuteronomy 7:26

And thou shalt not bring an abomination into thy house, lest thou be a cursed thing like it: thou shalt utterly detest it, and thou shalt utterly abhor it; for it is a cursed thing.

Joshua 22:18-20

And ye turn away this day from following Jehovah; and it will be, that since ye rebel this day against Jehovah, to-morrow he will be wroth with the whole assembly of Israel.

Judges 2:4

When the angel of the LORD spoke these words to all the people of Israel, the people lifted up their voices and wept.

Psalm 5:4-5

For thou art not a God that hath pleasure in wickedness; evil shall not sojourn with thee.

Proverbs 28:1

The wicked flee when no man pursueth; but the righteous are bold as a lion.

Isaiah 59:2

but your iniquities have separated between you and your God, and your sins have hid his face from you, that he doth not hear.

Jeremiah 6:8

Be thou instructed, Jerusalem, lest my soul be alienated from thee; lest I make thee a desolation, a land not inhabited.

Jeremiah 23:33

And when this people, or a prophet, or a priest, ask thee, saying, What is the burden of Jehovah? thou shalt then say unto them, What burden? I will even cast you off, saith Jehovah.

Hosea 9:12

For even should they bring up their children, yet will I bereave them, that not a man remain: for woe also to them when I shall have departed from them!

Habakkuk 1:13

Thou art of purer eyes than to behold evil, and canst not look on mischief: wherefore lookest thou upon them that deal treacherously, and keepest silence when the wicked swalloweth up a man more righteous than he?

Haggai 2:13-14

And Haggai said, If one that is unclean by a dead body touch any of these, is it become unclean? And the priests answered and said, It shall be unclean.

Treasury of Scripture Knowledge

Summary

Therefore the children of Israel could not stand before their enemies, but turned their backs before their enemies, because they were accursed: neither will I be with you any more, except ye destroy the accursed from among you.

Bible References

The children

Joshua 22:18
And ye turn away this day from following Jehovah; and it will be, that since ye rebel this day against Jehovah, to-morrow he will be wroth with the whole assembly of Israel.
Numbers 14:45
And the Amalekites and the Canaanites who dwelt on that hill, came down and smote them, and cut them to pieces, as far as Hormah.
Judges 2:4
When the angel of the LORD spoke these words to all the people of Israel, the people lifted up their voices and wept.
Psalm 5:4
For thou art not a God that hath pleasure in wickedness; evil shall not sojourn with thee.
Proverbs 28:1
The wicked flee when no man pursueth; but the righteous are bold as a lion.
Isaiah 59:2
but your iniquities have separated between you and your God, and your sins have hid his face from you, that he doth not hear.
Habakkuk 1:13
Thou art of purer eyes than to behold evil, and canst not look on mischief: wherefore lookest thou upon them that deal treacherously, and keepest silence when the wicked swalloweth up a man more righteous than he?

They were

Joshua 6:18
But in any wise keep from the accursed thing, lest ye make yourselves accursed in taking of the accursed thing, and make the camp of Israel a curse, and trouble it.
Deuteronomy 7:26
And thou shalt not bring an abomination into thy house, lest thou be a cursed thing like it: thou shalt utterly detest it, and thou shalt utterly abhor it; for it is a cursed thing.
Haggai 2:13
And Haggai said, If one that is unclean by a dead body touch any of these, is it become unclean? And the priests answered and said, It shall be unclean.

Neither

Jeremiah 6:8
Be thou instructed, Jerusalem, lest my soul be alienated from thee; lest I make thee a desolation, a land not inhabited.
Jeremiah 23:33
And when this people, or a prophet, or a priest, ask thee, saying, What is the burden of Jehovah? thou shalt then say unto them, What burden? I will even cast you off, saith Jehovah.
Hosea 9:12
For even should they bring up their children, yet will I bereave them, that not a man remain: for woe also to them when I shall have departed from them!

General references

Numbers 14:42
Go not up, for Jehovah is not among you; that ye be not smitten before your enemies;
Deuteronomy 23:9
When thou goest forth into camp against thine enemies, then keep thee from every evil thing.
Psalm 106:30
Then stood up Phinehas and executed judgment, and the plague was stayed;
Malachi 3:9
Ye are cursed with a curse; and me ye rob, even this whole nation.