Deuteronomy 29:19-20

19When such a person hears the words of this oath and they invoke a blessing on themselves, thinking, “I will be safe, even though I persist in going my own way,” they will bring disaster on the watered land as well as the dry.

20The Lord will never be willing to forgive them; his wrath and zeal will burn against them. All the curses written in this book will fall on them, and the Lord will blot out their names from under heaven.