And I will destroy your high places, and cut down your images, and cast your carcasses upon the carcasses of your idols, and my soul shall abhor you.

Wesley's Notes

26:30 High places - In which you will sacrifice after the manner of the Heathens. The carcases of your idols - So he calls them, either to signify that their idols how specious soever or glorious in their eyes, were in truth but lifeless and contemptible carcases; or to shew that their idols should be so far from helping them, that they should be thrown down and broken with them, and both should lie together in a forlorn and loathsome state.

Jamieson-Fausset-Brown Bible Commentary

30. I will destroy your high places-Consecrated enclosures on the tops of mountains, or on little hillocks, raised for practising the rites of idolatry.

cut down your images-According to some, those images were made in the form of chariots (2Ki 23:11); according to others, they were of a conical form, like small pyramids. Reared in honor of the sun, they were usually placed on a very high situation, to enable the worshippers to have a better view of the rising sun. They were forbidden to the Israelites, and when set up, ordered to be destroyed.

cast your carcases upon the carcases of your idols, &c.-Like the statues of idols, which, when broken, lie neglected and contemned, the Jews during the sieges and subsequent captivity often wanted the rites of sepulture.

Matthew Henry's Concise Commentary

26:14-39 After God has set the blessing before them which would make them a happy people if they would be obedient, he here sets the curse before them, the evils which would make them miserable, if they were disobedient. Two things would bring ruin. 1. A contempt of God's commandments. They that reject the precept, will come at last to renounce the covenant. 2. A contempt of his corrections. If they will not learn obedience by the things they suffer, God himself would be against them; and this is the root and cause of all their misery. And also, The whole creation would be at war with them. All God's sore judgments would be sent against them. The threatenings here are very particular, they were prophecies, and He that foresaw all their rebellions, knew they would prove so. TEMPORAL judgments are threatened. Those who will not be parted from their sins by the commands of God, shall be parted from them by judgments. Those wedded to their lusts, will have enough of them. SPIRITUAL judgments are threatened, which should seize the mind. They should find no acceptance with God. A guilty conscience would be their continual terror. It is righteous with God to leave those to despair of pardon, who presume to sin; and it is owing to free grace, if we are not left to pine away in the iniquity we were born in, and have lived in.