John Gill Commentary Nehemiah 12:47

"And all Israel in the days of Zerubbabel, and in the days of Nehemiah, gave the portions of the singers and the porters, as every day required: and they set apart [that which was] for the Levites; and the Levites set apart [that which was] for the sons of Aaron." — Nehemiah 12:47 (ASV)

And all Israel in the days of Zerubbabel, and in the days of
Nehemiah, gave the portions of the singers and the porters every day
his portion
While these two men governed they did their duty, and punctually paid the Levites their dues at the proper season:

and they sanctified holy things unto the Levites ;
set them apart for their use, and brought them to them, their offerings, firstfruits, and tithes: and the Levites sanctified them unto the children of Aaron; the Levites set apart the tenth part of the tithes, and delivered them to the priests, and so each had what belonged to them.