As people began filtering back into the promised land, the preaching of God's Word became centralized under Ezra and the walls would become rebuilt under Nehemiah. As the people began getting their lives back, one thing was visibly neglected - the house of God. To solve this issue, God commissioned the prophet Haggai to urge two leaders: Joshua the High Priest and Zerubbabel the Governor of Jerusalem to work together and lead the people to build and brand new temple.
The task was daunting, however God promised Haggai and the people that He would be with them every step of the way. John Walvoord and Roy B. Zuck write in the Bible Knowledge Commentary, page 1538, regarding Haggai's message: "God raised up Haggai the prophet to encourage the Jews in the rebuilding of the temple (Ezra 5:1-2; Haggai 1:1), His task was to arouse the leaders and the people from their spiritual lethargy and to encourage them to continue working on the temple. The initial success of Haggai in his mission (cf 1;12-15) was supplemented by the continued efforts of Zechariah until the temple reconstruction was finished in 515 b.c."
John Walvoord on page 315 of his 'Prophecy Knowledge Handbook' writes a fine example of those commentators favoring the passage predicting Christ's second advent: "In this prophecy God was predicting the far future where, before the second coming of Christ, the earth will be judged and Christ will return to take possession of the redeemed earth for the millennial kingdom. In this connection He will not only bless the temple that Israel was then building but also future temples, one to be built in the period preceeding the second coming of Christ, and the great temple described in Ezekiel 40-43 to be built after the second coming. God will glorify the millennial temple and will also glorify Himself in the temple that she (Jerusalem) was then building."