Passage
and I bring them in unto the ground which I have sworn to their fathers--flowing with milk and honey, and they have eaten, and been satisfied, and been fat, and have turned unto other gods, and they have served them, and despised Me, and broken My covenant.
Nearby Context
Deuteronomy 31:18 and I certainly hide My face in that day for all the evil which it hath done, for it hath turned unto other gods.
Deuteronomy 31:19 `And now, write for you this song, and teach it the sons of Israel; put it in their mouths, so that this song is to Me for a witness against the sons of Israel,
Deuteronomy 31:20 and I bring them in unto the ground which I have sworn to their fathers--flowing with milk and honey, and they have eaten, and been satisfied, and been fat, and have turned unto other gods, and they have served them, and despised Me, and broken My covenant.
Deuteronomy 31:21 `And it hath been, when many evils and distresses do meet it, that this song hath testified to its face for a witness; for it is not forgotten out of the mouth of its seed, for I have known its imagining which it is doing to-day, before I bring them in unto the land of which I have sworn.'
Deuteronomy 31:22 And Moses writeth this song on that day, and doth teach it the sons of Israel,
Study Lenses
The verse centers on "bring", "ground", "sworn", "fathers--flowing", "milk", "honey", "eaten", and "been". It is saying that the verse draws attention to "bring" and "ground", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 19's "And now write for you this song..." into verse 21's "And it hath been when many evils...", so "bring" and "ground" belong inside that flow. In Deuteronomy context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "bring" and "ground" with trust shaped by these words, not by a vague optimism outside the passage.