1 Chronicles 6:49

49 And Aaron and his sons are making perfume on the altar of the burnt-offering, and on the altar of the perfume, for all the work of the holy of holies, and to make atonement for Israel, according to all that Moses servant of God commanded.

1 Chronicles 6:49 Meaning and Commentary

Ver. 49-53. But Aaron and his sons
Those that descended from him, though of the same tribe of Levi were all priests:

and they offered upon the altar of burnt offerings;
the daily sacrifice, and all the offerings of the people brought to them:

and on the altar of incense;
they burnt incense night and morning: and were appointed

for all the work of the place most holy;
such as were high priests of the line of Eleazar, whose work it was to go into the most holy place once a year:

to make atonement for all Israel, according to all that Moses the
servant of God commanded;
in ( Leviticus 16:1 ) which see; and on mention of this, a list of the high priests from Aaron, in the line of Eleazar, is given, to the times of Solomon, in the four following verses, just in the same order as in ( 1 Chronicles 6:4-8 ) .

1 Chronicles 6:49 In-Context

47 son of Mahli, son of Mushi, son of Merari, son of Levi.
48 And their brethren the Levites are put to all the service of the tabernacle of the house of God.
49 And Aaron and his sons are making perfume on the altar of the burnt-offering, and on the altar of the perfume, for all the work of the holy of holies, and to make atonement for Israel, according to all that Moses servant of God commanded.
50 And these [are] sons of Aaron: Eleazar his son, Phinehas his son, Abishua his son,
51 Bukki his son, Uzzi his son, Zerahiah his son,
Young's Literal Translation is in the public domain.