Shared ground
These two verses make a blunt point: God’s coming judgment will not stop at national borders or at covenant badges. Judah is listed right alongside nearby peoples, which removes any sense of automatic exemption.
The passage also pushes a key distinction: an outward marker (circumcision) can exist together with a deeper condition described as “uncircumcised.” The final line names the deeper issue directly for Israel: “uncircumcised in heart.” So the text treats “heart” as the decisive arena, not the external sign.
Where interpretation differs (only where needed)
What “circumcised in uncircumcision” means. Some read it mainly as a moral/spiritual critique: people may have the physical sign but still live like outsiders to God’s will. Others think it also targets people who mix covenant identity with practices that effectively place them in the same category as the nations.
How absolute “all” is. The text says “all the nations” and “all the house of Israel,” but interpreters differ on whether this is a strict, literal totality or a sweeping, rhetorical way of describing a dominant reality.
What form the “punishment” takes. Many take it as historical disaster in Jeremiah’s setting (national collapse, invasion, exile). Others keep it more general as divine accountability, without tying it to one specific event.
Why the disagreement exists
The passage uses compressed, provocative wording (“circumcised…in uncircumcision”) and repeated “all” (all) to make its point. Those features are clear rhetorically, but they leave open how literally to map the phrases onto groups, behaviors, and historical outcomes.
What this passage clearly contributes
It states that God will punish those who rely on an outward covenant sign while remaining “uncircumcised,” and it explicitly includes both surrounding nations and Judah (Jeremiah 9:25–26). It also clarifies the diagnosis: the nations are “uncircumcised,” and Israel’s deeper problem is being “uncircumcised in heart.” In context (9:23–24), the passage supports the broader claim that real knowledge of Yahweh shows up in lived loyalty, justice, and right dealing—not in boasting or identity markers alone.