Shared ground
Deuteronomy 9:4–6 directly challenges an inner story Israel might tell itself after military success: “I got this land because I’m righteous.” The passage explicitly denies that explanation twice (vv. 4–6) and supplies alternatives: the nations are being removed “for the wickedness of these nations” (vv. 4–5), and Yahweh is also acting to keep a prior sworn word to the ancestors named here (v. 5). The description “stiff-necked” (v. 6) supports the same point: Israel is not being portrayed as morally superior.
The passage also assumes Yahweh is the primary actor (“Yahweh… thrust them out… does drive them out… gives you this good land”), so Israel’s possession is framed as received rather than achieved.
Where interpretation differs
Some readers take “for the wickedness of these nations” mainly as a statement about moral guilt justifying removal: the focus is the nations’ wrongdoing, measured by Yahweh.
Others emphasize that the text’s main target is Israel’s self-crediting, so “wickedness” functions primarily as the contrast term that blocks Israel’s self-congratulation, without trying to map out a full moral ranking system between groups.
Some also differ on how to relate the two stated reasons in v. 5: (1) the nations’ wickedness and (2) confirming the oath to the fathers. One reading treats them as complementary explanations (both true). Another stresses the oath as the deeper, controlling reason, with “wickedness” describing how the promise comes about in history.
Why the disagreement exists
The passage gives clear negatives about Israel (“not for your righteousness… not for the uprightness of your heart… stiff-necked”) but gives less detail about how Yahweh evaluates “wickedness” or how the two reasons in v. 5 are ordered. Because it is a corrective speech aimed at Israel’s pride, interpreters weigh differently which parts are primary (the anti-self-credit argument) and which are background (the moral assessment of the nations and the oath’s role).
What this passage clearly contributes
Textually, the passage contributes a sharp distinction between cause and self-perception: Israel’s possession of the land must not be explained as earned moral credit (vv. 4–6). It also links Israel’s land possession to two stated factors outside Israel’s moral deserving: Yahweh’s response to the nations’ wickedness (vv. 4–5) and Yahweh’s commitment to a prior promise sworn to Abraham, Isaac, and Jacob (v. 5). The label “stiff-necked” (v. 6) reinforces that Israel’s identity in the story is not “the righteous who deserve,” but a people receiving what they did not merit.