John Trapp on Jeremiah 51:59

Ver. 59. The word which Jeremiah the Prophet commanded Seraiah] This is now the laſt part, viz. a type uſed for confirmation of this prolix preceding Prophecy; uttered at Jeruſalem haply in the fourth year of Johejakim, which was the firſt of Nebuchadnezzar, and now to be read at Babylon in the fourth year of Zedekiah, which was ſeven years before the deſtruction of Jeruſalem, and above Sixty years before the deſtruction of Babylon. God loveth to fore-ſignify, but Babylon would not be warned; which was a juſt both deſert and preſage of her ruine.

When he went with Zedekiah] In company with him, ſay ſome out of the Jewes Chronicle: at which time Nebuchadnezzar, who had made him King, took an oath of him to be true to him: which he afterwards brake, and was pun[illegible: 1 letter]ſhed accordingly, 2 Chron. 36.13. Others think that Seraiah went not with Zedekiah, but for him, and from him with a preſent to Nebuchadnezzar, that he might keep his favour, or that he might be reconciled unto him after his revolt from him, 2 King. 24.20.

And this Seraiah was a great Prince] One that oppoſed the rebellion againſt Nebuchadnezzar, or a peace-maker at Court, or the great Chamberlain, Heb. a Prince of reſt, or, Prince of Menucha, a place ſo called, Judg. 20.43. or a quiet, honeſt and humble Prince: otherwiſe he would not have been thus commanded by a poor Prophet: eſpecially in a matter of ſo great danger, as it might have proved, if publikly noticed.