3. Their disingenuous conduct towards him, and the trouble they thereby brought upon themselves (v. 10): But they rebelled. Things looked very hopeful and promising; one would have thought that they should have continued dutiful children to God, and then there was no doubt but he would have continued a gracious Father to them; but here is a sad change on both sides, and on them be the breach. (1.) They revolted from their allegiance to God and took up arms against him: They rebelled, and vexed his Holy Spirit with their unbelief and murmuring, besides the iniquity of the golden calf; and this had been their way and manner ever since. Though he was ready to say of them, They will not lie, though he had done so much for them, borne them and carried them, yet they thus ill requited him, like foolish people and unwise, Deut. xxxii. 6. This grieved him, Ps. cxv. 10. The ungrateful rebellions of God's children against him are a vexation to his Holy Spirit. (2.) Thereupon he justly withdrew his protection, and not only so, but made war upon them, as a prince justly does upon the rebels. He who had been so much their friend was turned to be their enemy and fought against them, by one judgment after another, both in the wilderness and after their settlement in Canaan. See the malignity and mischievousness of sin; it makes God an enemy even to those for whom he has done the part of a good friend, and makes him angry who was all love and pity. See the folly of sinners; they wilfully lose him for a friend who is the most desirable friend, and make him their enemy who is the most formidable enemy. This refers especially to those calamities that were of late brought upon them by their captivity in Babylon for their idolatries and other sins. That which is both the original and the great aggravation of their troubles was that God was turned to be their enemy.