Moses could see it coming; he knew they couldn’t keep it.  He had just rescued his people from slavery in Egypt.  He’d been sent to deliver them to a land where God promised to bless them. But, before they even set foot in the land, Moses knew they would eventually mess it up, turn away from God and lose evrything they had. He warned them.  You can read it for yourself in the 29th chapter of Deuteronomy.   

Moses saw it coming and it happened, just as he said, 800  years later.  The Promised Land was overrun and destroyed.  The survivors were carted off to Babylon to live in exile.

But Moses also knew:

“…and when you and your children return to the Lord your God and obey him with all your heart and with all your soul according to everything I command you today, then the Lord your God will restore your fortunes and have compassion on you and gather you again from all the nations where he scattered you.  (Deuteronomy 30:2-3)
As unlikely as that would seem, it also happened, exactly as he said it would.  I am convinced God allowed that to demonstrate the tangible benefits of turning back to love and obey God “with all their hearts.”  Jesus also proclaimed this to be the most important commandment.

These days I sense a general attitude of despair and pessimism in the USA, a sense we have stumbled off in the wrong direction from which there seems to be no possible course correction.  Maybe Moses was on to something.