John Gill Commentary Haggai 2:1

"In the seventh [month], in the one and twentieth [day] of the month, came the word of Jehovah by Haggai the prophet, saying," — Haggai 2:1 (ASV)

In the seventh [month] The month Tisri, which answers to part of September and part of October:

in the one and twentieth [day] of the month ; being a month, wanting three days, from the time the Jews came and worked in the house of the Lord, (Haggai 1:14Haggai 1:15) it was toward the close of the feast of tabernacles: see (Leviticus 23:34) :

came the word of the Lord by the Prophet Haggai ; the word of prophecy, as the Targum: this was from the Lord, not from the prophet himself; he was only the messenger sent with it to deliver it:

saying ; to him the prophet, giving him orders as follow: