Haggai concentrates on God’s temple.
The Book of Haggai is the tenth of the Minor Prophetic Books and the thirty-seventh book in the Bible. It was written by the prophet Haggai in 520 BC after the Jewish people had returned from their 70-year exile in Babylon. Their exile had reformed the Jews and, unlike the past prophets, Haggai did not warn them of the dangers of idolatry and the worship of false gods. Instead Haggai urges the people to think less of their own comforts and rather to concentrate on rebuilding God's temple. In the past, prophets had been rejected but Haggai's words are listened to and acted upon. The people are stirred, and work on the temple is renewed.
"In the second year of Darius the king, in the sixth month, in the first day of the month, came the word of the Lord by Haggai the prophet unto Zerubbabel the son of Shealtiel, governor of Judah, and to Joshua the son of Josedech, the high priest, saying, Thus speaketh the Lord of hosts, saying, This people say, The time is not come, the time that the Lord’s house should be built"