Deuteronomy 8:18

But thou shalt remember the Lord thy God
That he was the author of their beings, the God of their lives and mercies; what great and good things he had done for them in Egypt, and in the wilderness; and particularly in putting them into the possession of such a fruitful country, abounding with all that heart could wish for:

for it is he that giveth thee power to get wealth;
for though men may have seeming opportunities for getting wealth, may have capacities for the management of business for the acquisition of it, and may not be wanting in diligence and industry, yet may not attain it; it is the blessing of God that makes rich, and to that it should be imputed whenever it is enjoyed; see ( Psalms 127:2 ) ( Proverbs 10:22 ) ( Ecclesiastes 9:11 ) ( 1 Chronicles 29:12 )

that he may establish his covenant which he sware unto thy fathers,
as [it is] this day;
that he would give the land of Canaan to their seed, and make them a rich and flourishing people, as they would be and were when possessed of the land, which is supposed throughout this discourse.