One of the things I'm looking at recently, is what has historically happened to nations which turn their backs on God's covenant (e.g., promises).
But if ye will not hearken unto me, and will not do all these commandments;and if ye shall despise my statutes, or if your soul abhor my judgments, so that ye will not do all my commandments, but that ye break my covenant:I also will do this unto you; I will even appoint over you terror ... (Leviticus 26:14-16)
The verses go on to describe other things that will happen, but this one's pretty self-explanatory, no?
The stranger that is within thee shall get up above thee very high; and thou shalt come down very low. (Deuteronomy 28:43)
He shall lend to thee, and thou shalt not lend to him: he shall be the head, and thou shalt be the tail. (Deuteronomy 28:44)
...and he shall eat the fruit of thy cattle, and the fruit of thy land, until thou be destroyed: which also shall not leave thee either corn, wine, or oil, or the increase of thy kine [cows or cattle - Ed.], or flocks of thy sheep, until he have destroyed thee. (Deuteronomy 28:51)
Does any of this sound familiar, or am I preaching to myself? There are more - many more - which are listed as a result of a nation's disobedience, but these are big & easily-recognizable.
It doesn't mean that God's faithful people are cursed along with the nation; in fact, just the opposite is true. But it certainly means that when God removes His hand from the nation as a whole, then the enemy is free to enter in, and The thief cometh not, but for to steal, and to kill, and to destroy... (John 10:10)
What are we to do about it?
[I]f my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land. (2 Chronicles 7:14)
We have our marching orders, folks. There's much, much more that can be said on the topic, but this should get the conversational ball rolling.
What say you?