IV. It is sin that brings these calamities upon the earth. The earth is made empty, and fades away, because it is defiled under the inhabitants thereof (v. 5); it is polluted by the sins of men, and therefore it is made desolate by the judgments of God. Such is the filthy nature of sin that it defiles the earth itself under the sinful inhabitants thereof, and it is rendered unpleasant in the eyes of God and good men. See Lev. xviii. 25, 27, 28. Blood, in particular, defiles the land, Num. xxxv. 33. The earth never spues out its inhabitants till they have first defiled it by their sins. Why, what have they done? 1. They have transgressed the laws of their creation, not answered the ends of it. The bonds of the law of nature have been broken by them, and they have cast from them the cords of their obligations to the God of nature. 2. They have changed the ordinances of revealed religion, those of them that have had the benefit of that. They have neglected the ordinances (so some read it), and have made no conscience of observing them. They have passed over the laws, in the commission of sin, and have passed by the ordinance, in the omission of duty. 3. Herein they have broken the everlasting covenant, which is a perpetual bond and will be to those that keep it a perpetual blessing. It is God's wonderful condescension that he is pleased to deal with men in a covenant-way, to do them good, and thereby oblige them to do him service. Even those that had no benefit by God's covenant with Abraham had benefit by his covenant with Noah and his sons, which is called an everlasting covenant, his covenant with day and night; but they observe not the precepts of the sons of Noah, they acknowledge not God's goodness in the day and night, nor study to make him any grateful returns, and so break the everlasting covenant and defeat the gracious designs and intentions of it.