Deuteronomy 29:22-28 (NIV)
22 Your children who follow you in later generations and foreigners who come from distant lands will see the calamities that have fallen on the land and the diseases with which the Lord has afflicted it.23 The whole land will be a burning waste of salt and sulfur—nothing planted, nothing sprouting, no vegetation growing on it. It will be like the destruction of Sodom and Gomorrah, Admah and Zeboyim, which the Lord overthrew in fierce anger. 24 All the nations will ask: “Why has the Lord done this to this land? Why this fierce, burning anger?”
25 And the answer will be: “It is because this people abandoned the covenant of the Lord, the God of their ancestors, the covenant he made with them when he brought them out of Egypt. 26 They went off and worshiped other gods and bowed down to them, gods they did not know, gods he had not given them. 27 Therefore the Lord’s anger burned against this land, so that he brought on it all the curses written in this book. 28 In furious anger and in great wrath the Lord uprooted them from their land and thrust them into another land, as it is now.”
Matthew Henry’s Concise Commentary
Idolatry would be the ruin of their nation. It is no new thing for God to bring desolating judgments on a people near to him in profession. He never does this without good reason. It concerns us to seek for the reason, that we may give glory to God, and take warning to ourselves. Thus the law of Moses leaves sinners under the curse, and rooted out of the Lord’s land; but the grace of Christ toward penitent, believing sinners, plants them again in their land; and they shall no more be pulled up, being kept by the power of God.
No other god, Lord but Thee. Nothing will compete with You in our hearts.