³¹and to offer all burnt offerings unto the Lord, in the sabbaths, in the new moons, and on the set feasts, in number according to the ordinance concerning them, continually before the Lord:
31. to offer all burnt offerings] This was the duty not of the Levites, who were to stand near-by praising Jehovah (verse 30), but of the priests. The apparent difficulty is due to a mistranslation: render and (to stand, i.e. assist) at every offering of burnt offerings.
the set feasts] i.e. the yearly feasts; Exodus xxiii. 14–17.
³²and that they should keep the charge of the tent of meeting, and the charge of the holy place, and the charge of the sons of Aaron their brethren, for the service of the house of the Lord.
32. the charge of the holy place] This duty is assigned to Levites in Numbers iii. 28, 32; is restricted and confined to such Levites as were sons of Kohath in Numbers iv. 15; and according to a variant tradition in Numbers xviii. 5 is assigned to the priests.
the charge of the sons of Aaron] Compare Numbers xviii. 1–7.
Chapter XXIV.
1–19.
David’s Organisation of the Priests by courses.
¹And the courses of the sons of Aaron were these. The sons of Aaron; Nadab and Abihu, Eleazar and Ithamar.