'Commandment' in the Bible

"We put on ourselves the commandment upon us to yearly give a third of a shekel for the service of the house of our God:

For it was the king's commandment concerning them, that a certain portion should be for the singers, due for every day.

And the chief of the Levites: Hashabiah, Sherebiah, and Jeshua the son of Kadmiel, with their brethren over against them, to praise and to give thanks, according to the commandment of David the man of God, ward over against ward.

And both the singers and the porters kept the ward of their God, and the ward of the purification, according to the commandment of David, and of Solomon his son.

had prepared for him a great chamber, where aforetime they laid the meal-offerings, the frankincense, and the vessels, and the tithes of the grain, the new wine, and the oil, which were given by commandment to the Levites, and the singers, and the porters; and the heave-offerings for the priests.