Thematic Bible: The reward for transgressing the covenant of the lord

Then the LORD told Moses, "Look! You are about to join your ancestors. Afterwards, this people will rebel and commit prostitution with the foreign gods of the land that they are about to enter to possess. They will abandon me and break my covenant that I made with them. When that happens, my anger will burn against them, because they will have abandoned me. I'll hide my face from them, they will be consumed, and many evils and distresses will find them. When this happens, they will say, "These troubles have happened to us because God isn't among us.'

because when such a person hears the words of this oath, he will bless himself and say: "I will have a peaceful life, even though I'm determined to be stubborn.' By doing this he will be sweeping away both watered and parched ground alike.' "The LORD won't forgive such a person. Instead, the zealous anger of the LORD will blaze against him. All the curses that were written in this book will fall on him. Then the LORD will wipe out his memory from under heaven. The LORD will set him apart from all the tribes of Israel for destruction, according to the curses of the covenant that were written in this Book of the Law." read more.
"Then the generation to come your descendants after you and the foreigners who come from afar will see plagues and illnesses infecting the land that the LORD will inflict on it. The whole land will be covered with salt pits and burning sulfur, with nothing planted, nothing sprouting, and producing no vegetation overthrown like Sodom, Gomorrah, Admah, and Zeboiim, when the LORD overthrew them in his raging fury. All the nations will ask, "Why did the LORD do this to this land? What is the meaning of this fierce and great anger?' Then they will answer themselves,

However, just as all of the good things have come about that the LORD your God promised, so also the LORD will bring upon you all of the threats until he has destroyed you from possessing this good land that he has given you. When you break the covenant of the LORD your God that he commanded you to obey by going to serve other gods and worship them, then the anger of the LORD will blaze against you, and you will perish quickly from this good land that he gave you."

In his burning anger against Israel, the LORD said, "Because the people have transgressed my covenant that I commanded their ancestors to keep, and because they haven't obeyed me, I'm also going to stop expelling any of the nations that remained after Joshua died. That way, I'll use them to demonstrate whether or not Israel will keep the LORD's lifestyle by walking on that road like their ancestors did." read more.
So the LORD caused those nations to remain and did not expel them quickly. He did not give them into Joshua's control.

After this, the king of Assyria carried Israel off into exile in Assyria, settling them in Halah, on the Habor River in Gozan, and in cities controlled by the Medes, because they would not obey the voice of the LORD their God. Instead, they transgressed his covenant, including everything that Moses, the servant of the LORD, had commanded, by neither listening nor putting what he had commanded into practice.