This entry represents an Atbash cipher in Jeremiah 51:1 where לֵב קָמָי ('Leb-kamai,' meaning 'heart of those rising against me') stands as a cryptic designation for Babylon or the Chaldeans. Atbash substitutes letters in reverse alphabetical order, so כשדים (Kasdim, Chaldeans) becomes קמי. The prophet uses coded language, possibly for rhetorical effect or to avoid direct naming during dangerous political circumstances. Scholarly debate continues over whether this is intentional cipher or textual corruption, but the cryptic quality adds to the oracle's mystique as Jeremiah pronounces judgment on Israel's oppressor.