Remember them, O my God, because they have desecrated the priesthood and the covenant of the priesthood and the Levites.
We have here one instance more of Nehemiah's pious zeal for the purifying of his countrymen as a peculiar people to God; that was the thing he aimed at in the use of his power, not the enriching of himself. See here, I. How they had corrupted themselves by marrying strange wives. This was complained of in Ezra's time, and much done towards a reformation, Ezr 9:1-15 and 10.
Commenting on Nehemiah 13:23-31
THE VIOLATION OF THE SABBATH. (Neh. 13:15-31) In those days saw I in Judah some treading wine-presses on the sabbath--The cessation of the temple services had been necessarily followed by a public profanation of the Sabbath, and this had gone so far that labor was carried on in the fields, and fish brought to the markets on the sacred day.
Commenting on Nehemiah 13:15-31
Remember them, O my God, because they have defiled the priesthood, and the covenant of the priesthood, and of the Levites. (n) Punish them according to their sin and the evil example they have given to the rest of the people contrary to their calling.