1 Chronicles 23:13

“The sons of Amram; Aaron and Moses, etc.] A son of Kohath, (<132302>1 Chronicles 23:2 <020620>Exodus 6:20) and Aaron was separated; from the children of Israel, (<022801>Exodus 28:1), that he should sanctify the most holy things, he and his sons for ever; by an holy use of them, and keeping them from all unholy and profane uses; and this they were to do as long as the Aaronic priesthood lasted: to burn incense before the Lord; in the holy place, on the altar of incense; which none but priests descended from Aaron might do: to minister unto him; both at the altar of burnt offering and of incense; and the high priest in the holy of holies: and to bless his name for ever, or “in his name”; that…”

“Aaron was separated--as high priest (see on 1Ch. 25:1-19).”

“Sanctify - That he might keep them from pollution: for these most holy things were polluted when they were touched by any other person. He and his - Not only his eldest sons the high - priests successively, but all his posterity or all the priests; for the works here following were not peculiar to the high - priest, but common to all the priests. 1 Chronicles 23:14”

“The sons: Ch1 6:3; Exo 6:20; Num 3:27, Num 26:59 separated: Exo 28:1-14; Num 18:1; Psa 99:6, Psa 106:16; Act 13:2; Rom 1:1; Gal 1:15; Heb 5:4 sanctify: Exo 29:33-37, Exo 29:44, Exo 40:9-15; Lev 10:10, Lev 10:17, Lev 10:18, Lev 16:11-19, Lev 16:32, Lev 16:33, Lev 17:2-6; Num 18:3-8 to burn incense: Exo 30:6-10, Exo 30:34-38; Lev 10:1, Lev 10:2, Lev 16:12, Lev 16:13; Num 16:16-18, Num 16:35-40, Num 16:46, Num 16:47; Sa1 2:28; Ch2 26:18-21; Luk 1:9; Rev 8:3 to bless: Lev 9:22, Lev 9:23; Num 6:23-27; Deu 21:5 1 Chronicles 23:14”