'Regular' in the Bible

the bread displayed before the Lord, the daily grain offering, the regular burnt offering, the Sabbath and New Moon offerings, the appointed festivals, the holy things, the sin offerings to atone for Israel, and for all the work of the house of our God.

And we, the priests and the Levites and the people, made selection, by the decision of the Lord, of those who were to take the wood offering into the house of God, by families at the regular times, year by year, to be burned on the altar of the Lord our God, as it is recorded in the law;

For there was an order from the king about them and a regular amount for the music-makers, for their needs day by day.

So I made them clean from all strange people, and had regular watches fixed for the priests and for the Levites, everyone in his work;