1Ch 24:19
These are their official classes for their service (cf. 1Ch 24:3), לבוא, so that they came (according to the arrangement thus determined) into the house of Jahve, according to their law, through Aaron their father (ancestor), i.e., according to the lawful arrangement which was made by Aaron for their official service, as Jahve the God of Israel had commanded. This last clause refers to the fact that the priestly service in all its parts was prescribed by Jahve in the law.