Jamieson, Fausset & Brown, on Jer 51:59

“The word that Jeremias the prophet commanded Saraias the son of Nerias, the son of Maasias, when he went with king Sedecias to Babylon, in the fourth year of his reign: now Saraias was chief over the prophecy.”

“A special copy of the prophecy prepared by Jeremiah was delivered to Seraiah, to console the Jews in their Babylonian exile. Though he was to throw it into the Euphrates, a symbol of Babylon's fate, no doubt he retained the substance in memory, so as to be able orally to communicate it to his countrymen. went with Zedekiah--rather, "in behalf of Zedekiah"; sent by Zedekiah to appease Nebuchadnezzar's anger at his revolt [CALVIN]. fourth year--so that Jeremiah's prediction of Babylon's downfall was thus solemnly written and sealed by a symbolical action, six whole years before the capture of Jerusalem by the Babylonians. quiet prince--Compare Ch1 22:9, "a man of rest." Seraiah was not one of the courtiers hostile to God's prophets, but "quiet" and docile; ready to execute Jeremiah's commission, notwithstanding the risk attending it. GLASSIUS translates, "prince of Menuchah" (compare Ch1 2:52, Margin). MAURER translates, "commander of the caravan," on whom it devolved to appoint the resting-place for the night. English Version suits the context best.”

Imported from an open dataset — not yet checked against the printed edition.