Jeremiah uses rhetorical impossibility to demonstrate that Judah cannot self-reform from deeply entrenched sin. The question form forces hearers to acknowledge their moral impossibility rather than merely hearing condemnation. By comparing sin to unchangeable physical characteristics, the prophet exposes the futility of human effort apart from divine intervention.

The text records no verbal response, but subsequent verses describe continued rebellion. God declares He will scatter them like chaff driven by desert wind, allotting them shame and exposure of their abominations because they forgot Him and trusted lies (Jeremiah 13:24-25).

Jeremiah’s double rhetorical question establishes an analogy between physical impossibility and moral incapacity. The Ethiopian’s skin (Hebrew עוֹר, or, meaning skin or hide) and the leopard’s spots (Hebrew חֲבַרְבֻּרֹתָיו, chavarburotav, meaning spots or stripes) represent fixed characteristics beyond the creature’s control. The conditional particle translated then (Hebrew גַּם, gam) creates logical dependency: if the first impossibility could occur, only then could the second. Jeremiah chooses the interrogative form rather than declarative statement to implicate his audience in reaching the inevitable conclusion themselves. The theological weight rests on the phrase accustomed to do evil (Hebrew לִמֻּדֵי הָרֵעַ, limudei harea), where the verb למד (lamad) means to learn or be trained, suggesting evil has become their education and expertise. Sin is not merely chosen but mastered.