What does Deuteronomy 11:7 mean?

and what he did to the army of Egypt, to their horses, and to their chariots; how he made the water of the Red Sea to overflow them as they pursued you, and how Yahweh has destroyed them to this day;

and what he did to you in the wilderness, until you came to this place;

and what he did to Dathan and Abiram, the sons of Eliab, the son of Reuben; how the earth opened its mouth, and swallowed them up, with their households, their tents, and every living thing that followed them, in the middle of all Israel;

Therefore you shall keep all the commandment which I command you today, that you may be strong, and go in and possess the land, where you go over to possess it;

and that you may prolong your days in the land, which Yahweh swore to your fathers to give to them and to their offspring, a land flowing with milk and honey.

For the land, where you go in to possess, isn’t like the land of Egypt, that you came out of, where you sowed your seed, and watered it with your foot, as a garden of herbs;