31 These likewise cast lots even as their brothers the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the heads of the fathers' (houses) of the priests and of the Levites; the fathers' (houses) of the chief even as those of his younger brother.
*Minor differences ignored. Grouped by changes, with first version listed as example.
The principal fathers over against their younger brethren - i. e., "all the Levitical houses enumerated drew lots in their courses on equal terms, the older families having no advantage over the younger ones." As there were 24 courses of the priests, so we must suppose that there were 24 of the Levites, though the number of the families as given in the text 1 Chr. 23:7-23; 1-Chronicles 24:20-30 is 25.
These likewise cast lots - The Levites were divided into twenty-four orders; and these were appointed by lot to serve under the twenty-four orders of the priests: the first order of Levities under the first order of priests, and so on. The meaning is not very clear: "both elder and younger," says Bishop Patrick, "had their places by lot, not by seniority of houses. They who were of greater dignity drew lots against those who were of less; and were to take their courses according to the lot they drew." This may have been the case; but we are very little interested in the subject.
These likewise cast (f) lots over against their brethren the sons of Aaron in the presence of David the king, and Zadok, and Ahimelech, and the chief of the fathers of the priests and Levites, even the principal fathers over against their younger brethren.
(f) That is, every one had that honour which fell to him by lot.
These likewise cast lots over against their brethren, the sons of Aaron,.... These, being divided into twenty four classes also, cast lots, which class should answer to, attend upon, and serve the first course of the priests, and which the second, and so on. And this they did in the same solemn and public manner as the priests had done:
in the presence of David the king, and Zadok, and Ahimelech, and the chief of the fathers of the priests and Levites; as in 1-Chronicles 24:6.
even the principal fathers over against their younger brethren; the sense is, either that the one stood over against the other, to be distributed by lot, the one as well as the other; or they were chosen by lot, let it fall as it would, without any regard to age or dignity, to the seniority or largeness of houses and families; but as they were chosen, be they younger or elder, richer or poorer, their families more or less numerous and ancient, so they took their places.
וגו דויד לפני, as in 1-Chronicles 24:6. In the last clause אבות is used for בּית־אבות, as אבות ראשׁי stands frequently for בּית־אבות ראשׁי in these catalogues. הראשׁ stands in apposition to בּית־אבות, the father's-house; the head even as his younger brother, i.e., he who was the head of the father's-house as etc., i.e., the oldest among the brethren as his younger brethren. The Vulgate gives the meaning correctly: tam majores quam minores; omnes sors aequaliter dividebat.
Over against - Answerable for number and order to those of the priests, so that there should be a course of the Levites for each course of the priests.
*More commentary available at chapter level.