Nehemiah 8:18

8:18 Ezra read in the book of the law of God day by day, from the first day to the last. They observed the festival for seven days, and on the eighth day they held an assembly as was required.

Nehemiah 12:47

12:47 So in the days of Zerubbabel and in the days of Nehemiah, all Israel was contributing the portions for the singers and gatekeepers, according to the daily need. They also set aside the portion for the Levites, and the Levites set aside the portion for the descendants of Aaron.

Nehemiah 13:22

13:22 Then I directed the Levites to purify themselves and come and guard the gates in order to keep the Sabbath day holy.

For this please remember me, O my God, and have pity on me in keeping with your great love.