Nehemiah 10:28

And the rest of the people
That did not sign and seal:

the priests, the Levites, the porters, the singers, the Nethinims;
the porters and singers were Levites; but those so called were such as waited upon the priests, as the Nethinims were persons that waited on them:

and all they that had separated themselves from the people of the lands
unto the law of God;
proselytes, who had renounced Heathenism, and embraced the true religion, had received the law of God, and professed to walk according to it;

their wives, their sons, and their daughters, everyone having
knowledge, and having understanding;
of the nature of the covenant, and the things contained in it, of what was required of them, and of what they promised, of the nature of an oath they entered into, and of the sin of perjury.