The Babylonians, led by King Nebuchadnezzar, destroyed the city of Jerusalem, including Solomon's temple, in 586 B.C. and took most of the Jews captive to Babylon. There the Israelites could not practice their formal worship (religious cult) as the Mosaic Law prescribed because they lacked an authorized altar and temple. They prayed toward Jerusalem privately (cf. Dan. 6:10) and probably publicly, and they established synagogues where they assembled to hear their Law read and to worship God informally. King Cyrus of Persia allowed the Jewish exiles to return to their land in 538 B.C. At least three waves of returnees took advantage of this opportunity. The first of these was the group of almost 50,000 Jews that returned under the leadership of Sheshbazzar, and Zerubbabel who replaced him, in 537 B.C. (Ezra 1:2-4).2Haggai and Zechariah appear to have been two of these returnees, as was Joshua the high priest, though Haggai's name does not appear in the lists of returnees in the opening chapters of Ezra. During the year that followed, these returnees rebuilt the brazen altar in Jerusalem, resumed offering sacrifices on it, celebrated the feast of Tabernacles, and laid the foundation for the reconstruction of the (second) temple. Opposition to the rebuilding of the temple resulted in the postponement of construction for 16 years. During this long period apathy toward temple reconstruction set in among the residents of Judah and Jerusalem. Then in 520 B.C., as a result of changes in the Persian government and the preaching of Haggai, the people resumed rebuilding the temple.3They finished the project about five years later in 515 B.C. (cf. Ezra 1-6).4Haggai first sounded the call to resume construction, and Zechariah soon joined him. Zechariah's ministry lasted longer than Haggai's.
