Albert Barnes Commentary Jeremiah 28:1

"And it came to pass the same year, in the beginning of the reign of Zedekiah king of Judah, in the fourth year, in the fifth month, that Hananiah the son of Azzur, the prophet, who was of Gibeon, spake unto me in the house of Jehovah, in the presence of the priests and of all the people, saying," — Jeremiah 28:1 (ASV)

In the beginning ... Zedekiah - Probably a gloss put into the margin to explain “the same year,” from where it has crept into the text.

Gibeon - A city of priests (Joshua 21:17). Hananiah was probably a priest as well as a prophet. He chose either a Sabbath or a new moon, that he might confront Jeremiah not only in the presence of the priests, but also of all the people. He used (Jeremiah 28:2) the solemn formula which claims direct inspiration.