III. The sermon itself is short, but very close. God here tells them plainly, 1. What he had done for them, v. 1. He had brought them out of Egypt, a land of slavery and toil, into Canaan, a land of rest, liberty, and plenty. The miseries of the one served as a foil to the felicities of the other. God had herein been kind to them, true to the oath sworn to their fathers, had given such proofs of his power as left them inexcusable if they distrusted it, and such engagements to his service as left them inexcusable if they deserted it. 2. What he had promised them: I said, I will never break my covenant with you. When he took them to be his peculiar people, it was not with any design to cast them off again, or to change them for another people at his pleasure; let them but be faithful to him, and they should find him unchangeably constant to them. He told them plainly that the covenant he entered into with them should never break, unless it broke on their side. 3. What were his just and reasonable expectations from them (v. 2): that being taken into covenant with God they should make no league with the Canaanites, who were both his enemies and theirs,—that having set up his altar they should throw down their altars, lest they should be a temptation to them to serve their gods. Could any thing be demanded more easy? 4. How they had in this very thing, which he had most insisted on, disobeyed him: "But you have not in so small a matter obeyed my voice." In contempt of their covenant with God, and their confederacy with each other in that covenant, they made leagues of friendship with the idolatrous devoted Canaanites, and connived at their altars, though they stood in competition with God's. "Why have you done this? What account can you give of this perverseness of yours at the bar of right reason? What apology can you make for yourselves, or what excuse can you offer?" Those that throw off their communion with God, and have fellowship with the unfruitful works of darkness, know not what they do now, and will have nothing to say for themselves in the day of account shortly. 5. How they must expect to smart by and by for this their folly, v. 3. Their tolerating the Canaanites among them would, (1.) Put a period to their victories: "You will not drive them out," says God, "and therefore I will not;" thus their sin was made their punishment. Thus those who indulge their lusts and corruptions, which they should mortify, forfeit the grace of God, and it is justly withdrawn from them. If we will not resist the devil, we cannot expect that God should tread him under our feet. (2.) It would involve them in continual troubles. "They shall be thorns in your sides to gore you, which way soever you turn, always doing you one mischief or other." Those deceive themselves who expect advantage by friendship with those that are enemies to God. (3.) It would (which was worst of all) expose them to constant temptation and draw them to sin. "Their gods" (their abominations, so the Chaldee) "will be a snare to you; you will find yourselves wretchedly entangled in an affection to them, and it will be your ruin," so some read it. Those that approach sin are justly left to themselves to fall into sin and to perish in it. God often makes men's sin their punishment; and thorns and snares are in the way of the froward, who will walk contrary to God.