Nehemiah 8:18

Also day by day, from the first day unto the last day, he read in the book of the law of God. And they kept the feast seven days; and on the eighth day was a solemn assembly, according unto the manner.

Nehemiah 8:18 belongs to Ezra's public reading of the Book of the Law of Moses, God's law, before the people. The people had gathered in Jerusalem in a large assembly to hear it read. The reading took place during the seven-day Feast of Tabernacles, with the law read day by day from the first day to the last, followed on the eighth day by a solemn assembly as prescribed. The reading was explained in the people's own language so that they could understand it. It was expected to lead the hearers to deep repentance and a return to the Lord.