'Attend' in the Bible

Every morning and every evening they offer the burnt offerings and the fragrant incense to the Lord; and the showbread is set on the clean table [of pure gold], and the golden lampstand with its lamps is ready to light every evening; for we keep the charge of the Lord our God [that is, the obligation we have to Him], but you have abandoned (turned away from) Him.

And stand in the holy place [of the priests] according to the sections of the fathers’ households of your fellow kinsmen the lay people, and according to the Levites, by division of [the families of] a father’s household.