Charles Spurgeon Commentary Deuteronomy 6:10-12

"And it shall be, when Jehovah thy God shall bring 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 buildest not, and houses full of all good things, which thou filledst not, and cisterns hewn out, which thou hewedst not, vineyards and olive-trees, which thou plantedst not, and thou shalt eat and be full; then beware lest thou forget Jehovah, who brought thee forth out of the land of Egypt, out of the house of bondage." — Deuteronomy 6:10-12 (ASV)

And it shall be, when the LORD your God shall have brought you into the land which he swore to your fathers, to Abraham, to Isaac, and to Jacob, to give you great and goodly cities, which you did not build, and houses full of all good things, which you did not fill, and wells digged, which you did not dig, vineyards and olive trees, which you did not plant; when you shall have eaten and be full; then beware lest you forget the LORD, which brought you out of the land of Egypt, from the house of bondage.

Bread eaten is soon forgotten. How often we act like dogs that will take the bones from our hand, and then forget the hand that gave them! It should not be so with us. All our spiritual mercies, and many of our temporal ones, are very much like the inheritance of Israel in the land of Canaan, wells that they did not dig, and vineyards which they did not plant. Our blessings come from sources that are beyond our own industry and skill; they are the fruits of the holy inventiveness of God, and the splendor and fullness of his thoughtfulness towards his poor children. Let us not forget him, since evidently he never forgets us.