The chapter opens with two basic commands: do not make idols or images to worship, and keep the Lord's Sabbaths and revere his sanctuary. Everything else grows from here, because obedience begins with worshiping the Lord alone.
Then come the blessings for those who walk in his statutes: rain in its season, harvests so abundant that one overtakes the next, bread to the full, peace in the land, no harmful beasts and victory over enemies. The Lord promises to multiply his people, to keep his covenant and to set his dwelling among them. He himself will walk among his people, be their God and have them as his people, reminding them that he brought them out of Egypt and broke their yoke.
Then the other side appears. If they will not listen, the Lord will send terror, disease, defeat and drought. If they still do not return, the discipline will be multiplied sevenfold, again and again, in ever harsher stages: drought and hard ground, wild beasts and plague, war and the sword, and finally siege, famine and exile among the nations. Meanwhile the land will enjoy the Sabbaths the people never gave it while they are scattered.
The chapter does not end in judgment. If they confess their sin and the sin of their fathers, and their stubborn hearts are humbled, the Lord will remember his covenant with Jacob, Isaac and Abraham, and he will remember the land too. Even in the land of their enemies he will not reject them or destroy them completely, because he is their God.