This verse answers the question, May not Judah avert this calamity by repentance? No: because her sins are too inveterate. By the Ethiopian (Hebrew: Cushite) is meant not the Cushite of Arabia but of Africa, i. e., the negro.
Related Commentaries of Jeremiah 13:23
Jeremiah 13:23
23 Can the Ethiopian change his skin, or the leopard his spots? then may ye also do good, that are accustomede to do evil.