(Chapter 27 - Verse 1) In the beginning of the reign of Joachim, son of Josiah, king of Judah, this word came to Jeremiah from the Lord, saying. This is not found in the Septuagint edition. And many think that the beginning of the following chapter should be joined to the previous one, so that whatever is said and done in the beginning of Joachim's reign is believed to have happened. Hence, he had the power to send to Egypt, as to a friendly king. But it seems to me that they have deliberately omitted this title for the following reason, so that they would not appear to be contradicting themselves. For they had already stated at the beginning: In the beginning of the reign of Jehoiakim the son of Josiah king of Judah, this word came from the Lord to Jeremiah, saying.
[AD 420] Jerome on Jeremiah 27:1