John Gills Exposition of the Bible Commentary - Ezra 3:4
They kept also the feast of tabernacles, as it is written ,.... According to the rules prescribed for the observation of it in Leviticus 23:34 this began on the fifteenth day of the seventh month: and offered the daily burnt offerings by number, according to the custom, as the duty of every day required ; for on all the eight days of the feast there was a certain number of sacrifices fixed for every day; and exactly according to the law concerning them did they offer them at this time;... read more
Matthew Henry's Complete Commentary - Ezra 3:1-7
Here is, I. A general assembly of the returned Israelites at Jerusalem, in the seventh month, Ezra 3:1. We may suppose that they came from Babylon in the spring, and must allow at least four months for the journey, for so long Ezra and his company were in coming, Ezra 7:9. The seventh month therefore soon came, in which many of the feasts of the Lord were to be solemnized; and then they gathered themselves together by agreement among themselves, rather than by the command of authority, to... read more