Verse 2. - Hear ye, O mountains. Insensate nature is called upon as a witness. (For similar appeals, comp. Deuteronomy 4:26; Deuteronomy 32:1; Isaiah 1:2; Jeremiah 22:29.) The Lord's controversy. So God calls his pleading with his people to show them their sin and thankless unbelief; as he says in Isaiah 1:18, "Come, and let us reason together" (comp. Hosea 4:1; Hosea 12:2). Ye strong (enduring) foundations of the earth. The mountains are called everlasting (Genesis 49:26; Deuteronomy 33:15), as being firm, unchangeable, and as compared with man's life and doings, which are but transitory. The LXX. offers an interpretation as well as a translation, Αἱ φάραγγες θεμέλια τῆς γῆς, "Ye valleys, the foundations of the earth." With his people. It is because Israel is God's people that her sin is so heinous, and that God condescends to plead with her. He would thus touch her conscience by recalling his benefits. So in the following verses.

6:1-5 The people are called upon to declare why they were weary of God's worship, and prone to idolatry. Sin causes the controversy between God and man. God reasons with us, to teach us to reason with ourselves. Let them remember God's many favours to them and their fathers, and compare with them their unworthy, ungrateful conduct toward him.Hear ye, O mountains, the Lord's controversy, and ye strong foundations of the earth,.... These are the words of the prophet, obeying the divine command, calling upon the mountains, which are the strong parts of the earth, and the bottoms of them the foundations of it, to hear the Lord's controversy with his people, and judge between them; or, as some think, these are the persons with whom, and against whom, the controversy was; the chief and principal men of the land, who were as pillars to the common people to support and uphold them:

for the Lord hath a controversy with his people, and he will plead with Israel; his people Israel, who were so by choice, by covenant, by their own avouchment and profession: they had been guilty of many sins and transgressions against both tables of the law; and now the Lord had a controversy with them for them, and was determined to enter into judgment, and litigate the point with them; and dreadful it is when God brings in a charge, and pleads his own cause with sinful men; they are not able to contend with him, nor answer him for one of a thousand faults committed against him; see Hosea 4:1.