John Gill Commentary Deuteronomy 28:8

"Jehovah will command the blessing upon thee in thy barns, and in all that thou puttest thy hand unto; and he will bless thee in the land which Jehovah thy God giveth thee." — Deuteronomy 28:8 (ASV)

The Lord shall command the blessing upon you in your storehouses Barns, granaries, and cellars, where their corn, wine, and oil, were laid up; by preserving the corn from being devoured by vermin, and the casks of wine and oil from bursting and running out:

and in all you set your hand to; in all their manufactures, occupations, and trades, in which they were employed, and in the culture of their vines, olives, and other fruit trees:

and he shall bless you in the land which the Lord your God gives you; with health and long life in it, and with an abundance of all good things, it being a land flowing with milk and honey.