Deuteronomy 11:28

and the curse, if ye shall not hearken to the commandments of LORD your God, but turn aside out of the way which I command you this day to go after other gods, which ye have not known.

Deuteronomy 28:15-68

But it shall come to pass, if thou will not hearken to the voice of LORD thy God, to observe to do all his commandments and his statutes which I command thee this day, that all these curses shall come upon thee, and overtake thee:

Leviticus 26:14-32

But if ye will not hearken to me, and will not do all these commandments,

Deuteronomy 29:19-28

and it comes to pass, when he hears the words of this curse, that he blesses himself in his heart, saying, I shall have peace, though I walk in the stubbornness of my heart, to destroy the moist with the dry.

Isaiah 1:20

But if ye refuse and rebel, ye shall be devoured with the sword, for the mouth of LORD has spoken it.

Isaiah 3:11

Woe to the wicked! [It is] ill [with him], for what his hands have done shall be done to him.

Matthew 25:41

Then he will also say to those at the left hand, Depart from me, ye accursed, into the eternal fire prepared for the devil and his agents.

Romans 2:8-9

but to those of self-interest, and who indeed disobey the truth but have confidence in unrighteousness--anger and wrath,

Galatians 3:10

For as many as are from works of law are under a curse, for it is written, Cursed is every man who does not continue in all things written in the book of the law, to do them.

Treasury of Scripture Knowledge

Summary

And a curse, if ye will not obey the commandments of the LORD your God, but turn aside out of the way which I command you this day, to go after other gods, which ye have not known.

Bible References

General references

Deuteronomy 28:15
But it shall come to pass, if thou will not hearken to the voice of LORD thy God, to observe to do all his commandments and his statutes which I command thee this day, that all these curses shall come upon thee, and overtake thee:
Deuteronomy 29:19
and it comes to pass, when he hears the words of this curse, that he blesses himself in his heart, saying, I shall have peace, though I walk in the stubbornness of my heart, to destroy the moist with the dry.
Leviticus 26:14
But if ye will not hearken to me, and will not do all these commandments,
Isaiah 1:20
But if ye refuse and rebel, ye shall be devoured with the sword, for the mouth of LORD has spoken it.
Isaiah 3:11
Woe to the wicked! [It is] ill [with him], for what his hands have done shall be done to him.
Matthew 25:41
Then he will also say to those at the left hand, Depart from me, ye accursed, into the eternal fire prepared for the devil and his agents.
Romans 2:8
but to those of self-interest, and who indeed disobey the truth but have confidence in unrighteousness--anger and wrath,
Galatians 3:10
For as many as are from works of law are under a curse, for it is written, Cursed is every man who does not continue in all things written in the book of the law, to do them.