v1: Having arrived in Jerusalem, the people gathered together to worship God. They returned to the city chosen by God; 2 Chr 6.6; Ps 132.13-16. If they wanted to enjoy God's blessing, this was the place to be.
v2: There was Jeshua and other priests, with Zerubbabel with other leaders; they worked together to rebuild the altar, and they sacrificed offerings. This was important, as the basis of communion with God, and as a testimony to the nations.
v3: The people were afraid, for there were people around who were antagonistic, aggressive, threatening; attacks were not long in coming (ch 4). In spite of this fear, they continued to offer sacrifices.
All who truly love God will find conflict from those who do not; we must remain faithful in serving God.
v4: They observed the Feast of Tabernacles; the writer emphasises that they did so in accordance with what was written; they worshipped God God's way; there is a proper order which must be observed. We note too that to sacrifice animals was something costly, given that the people had only just returned to Judah.
The Christian looks to Acts 2.42 for the basis of his worship; the Lord's supper, fellowship, teaching of Scripture, and prayer.
v5: God's word, properly understood, is not a burden, but the route to freedom. Here obedience to the Word gave the people freedom to bring their freewill offerings. Proper order provides for a spontaneous and personal response.
v6-7: Although the foundation for the temple had not yet been made, provision was made for it to be laid.
v8-9: Zerubbabel was of the kingly line, 1 Chr 3.17-19. He and Jeshua the High Priest (4.3; 5.2) began to lead the people. Seven months after worship was restored, the Levites were set apart to oversee the work on the temple. Part of their responsibility was the building of the temple; Num 1.50; 1 Chr 23.27-32.
v10-11: The foundation was important, although invisible. The people rightly came together to praise God for this development. Our foundations; in understanding (Heb 6.1-3), in love (Eph 3.17), in Christ (Col 2.7).
The style of worship introduced by David, with trumpets, cymbals, singing, was now revived.
v12-13: An emotional moment as the people considered the progress made. Since the sound was heard far away, others would take an interest in events in Jerusalem, and they may not all be sympathetic to the building of the temple.