Haggai

Haggai is a prophet who begins his ministry around 520 BC in the Persian province of Judah. He calls on the people to rebuild the Temple of God.
The book of Haggai is named after him.

The name Haggai means “child of the feast”.
Haggai is a contemporary of the prophet Zechariah (Ezra 5:1; Ezra 6:14).

The Temple in Jerusalem was destroyed in 586 BC by the Babylonians. When Cyrus, the king of Persia, later allows the exiles from Judah to return to their own land, he commands them to rebuild the Temple in Jerusalem.
The people in Judah however, delay beginning to rebuild the Temple, preferring instead to build their own houses first (Haggai 1:4). Together with the prophet Zechariah, Haggai urges the returning exiles to begin rebuilding the Temple of God. He addresses mainly the governor of Judah, Zerubbabel and the High Priest Joshua (Haggai 1:1).

Haggai explains that the drought and the bad harvest in Judah are a consequence of their delay in building the Temple. If they were to begin on the Temple, then blessings would again descend on the land. Things would also go better for the governor, Zerubbabel.
In his last speech, Haggai addresses Zerubbabel. He says that God will break the power of all the nations, and that he has chosen Zerubbabel to be his servant (Haggai 2:20-23).