The Israelites were at the point of quitting a normal, life for a fixed and settled abode in the midst of other nations; they were exchanging a condition of comparative poverty for great and goodly cities, houses and vineyards. There was therefore before them a double danger;

(1) a God-forgetting worldliness, and

(2) a false tolerance of the idolatries practiced by those about to become their neighbors.

The former error Moses strives to guard against in the verses before us; the latter in Deuteronomy 7:1-11.

And it shall be, when the Lord thy God shall have brought thee into the land,.... The land of Canaan, on the borders of which they now were, and were just going into:

which he sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give thee; of his own free favour and good will, without any merit and desert of theirs, and in which would be found

great and goodly cities, which thou buildedst not; large and capacious, delightfully situated, well built, and strongly fortified, without any pains or expense of theirs; all ready for them to take possession of, and dwell in; and so should no longer reside in tents or booths, as they had for forty years past, but in spacious and noble cities.

To the positive statement of the command there is attached, in the next place, the negative side, or a warning against the danger to which prosperity and an abundance of earthly goods so certainly exposed, viz., of forgetting the Lord and His manifestations of mercy. The Israelites were all the more exposed to this danger, as their entrance into Canaan brought them into the possession of all the things conducive to well-being, in which the land abounded, without being under the necessity of procuring these things by the labour of their own hands; - into the possession, namely, of great and beautiful towns which they had not built, of houses full of all kinds of good things which they had not filled, of wells ready made which they had not dug, of vineyards and olive-plantations which they had not planted. - The nouns ערים, etc. are formally dependent upon לך לתת, and serve as a detailed description of the land into which the Lord was about to lead His people.

And it shall be, when the LORD thy God shall have brought thee into the land which he sware unto thy fathers, to Abraham, to Isaac, and to Jacob, to give thee great and goodly cities, which thou buildedst not,

6:6-16 Here are means for maintaining and keeping up religion in our hearts and houses. 1. Meditation. God's words must be laid up in our hearts, that our thoughts may be daily employed about them. 2. The religious education of children. Often repeat these things to them. Be careful and exact in teaching thy children. Teach these truths to all who are any way under thy care. 3. Pious discourse. Thou shalt talk of these things with due reverence and seriousness, for the benefit not only of thy children, but of thy servants, thy friends and companions. Take all occasions to discourse with those about thee, not of matters of doubtful disputation, but of the plain truths and laws of God, and the things that belong to our peace. 4. Frequent reading of the word. God appointed them to write sentences of the law upon their walls, and in scrolls of parchment to be worn about their wrists. This seems to have been binding in the letter of it to the Jews, as it is to us in the intent of it; which is, that we should by all means make the word of God familiar to us; that we may have it ready to use upon all occasions, to restrain us from sin, and direct us in duty. We must never be ashamed to own our religion, nor to own ourselves under its check and government. Here is a caution not to forget God in a day of prosperity and plenty. When they came easily by the gift, they would be apt to grow secure, and unmindful of the Giver. Therefore be careful, when thou liest safe and soft, lest thou forget the Lord. When the world smiles, we are apt to make court to it, and expect our happiness in it, and so we forget Him who is our only portion and rest. There is need of great care and caution at such a time. Then beware; being warned of your danger, stand upon your guard. Thou shalt not tempt the Lord thy God; neither by despairing of his power and goodness, while we keep in the way of our duty; nor by presuming upon it, when we turn aside out of that way.