Shared ground
Numbers 33:55–56 presents a conditional warning tied to Israel’s entry into the land. The text explicitly says that if Israel does not “drive out” the inhabitants, the people left in place will become a continuing source of harm—described with painful body imagery (“pricks” in the eyes, “thorns” in the sides)—and they will “vex” Israel in the very land where Israel is living.
The passage ends with an explicit reversal: what God “thought” (thought) to do to the inhabitants will be done to Israel instead. However one explains “thought,” the point in the sentence is clear: Israel’s failure to carry out the instruction brings a matching consequence back on Israel.
Where interpretation differs (only where needed)
A main question is what “drive out” entails. Some read it as primarily removing the inhabitants from the territory (expulsion/displacement), whether by battle or other means. Others read it more broadly as ending their ongoing presence and power in the land (defeat and removal of control), without specifying the exact method in these two verses.
Another question is how to understand “as I thought to do to them.” Some take it as a settled divine intention announced earlier: God had a defined plan of judgment on the inhabitants, and Israel’s compromise triggers that same kind of judgment against Israel. Others hear it as warning language: God presents what he was prepared to do, and the statement functions to stress that Israel is not exempt from serious consequences.
Why the disagreement exists
The wording is brief and image-heavy. “Drive out” can describe different kinds of removal in ancient territorial settings, and these verses do not spell out mechanics. Likewise, “thought” can be heard as either firm intent or stated readiness, and the verse’s main emphasis is the reversal rather than explaining the psychology behind the word.
What this passage clearly contributes
This passage clearly links incomplete removal of hostile inhabitants with long-term, internalized trouble “in the land in which you dwell,” not merely an initial military problem. It also contributes a strong theme of moral symmetry: the community should not assume immunity; the same kind of outcome expected for opponents can come upon Israel if Israel refuses the instruction. The metaphors underline persistence—irritation and injury that keep returning, not a single incident (Numbers 33:55–56).