Exodus 29:30

30 The priest his successor from among his sons who shall go into the tabernacle of witness to minister in the holies, shall put them on seven days.

Exodus 29:30 Meaning and Commentary

Exodus 29:30

And that son that is priest in his stead
The Targum of Jonathan is,

``who shall rise after him of his sons, not of the Levites;''

for the high priest was to be of the family of Aaron, a descendant of his; it was not enough that he was of the tribe of Levi, but he must descend from Aaron, either in the line of Eleazar or of Ithamar:

shall put them on seven days;
the next successor was to wear the garments seven days running:

when he cometh into the tabernacle of the congregation to minister in
the holy place;
to offer sacrifice in the court of the tabernacle, on the altar of burnt offering, and to offer incense on the altar of incense, and to trim the lamps of the candlestick, and to put the shewbread on the table.

Exodus 29:30 In-Context

28 And it shall be a perpetual statute of the children of Israel to Aaron and his sons, for this is a separate offering; and it shall be a special offering from the children of Israel, from the peace-offerings of the children of Israel, a special offering to the Lord.
29 And the apparel of the sanctuary which is Aaron's shall be his son's after him, for them to be anointed in them, and to fill their hands.
30 The priest his successor from among his sons who shall go into the tabernacle of witness to minister in the holies, shall put them on seven days.
31 And thou shalt take the ram of consecration, and thou shalt boil the flesh in the holy place.
32 And Aaron and his sons shall eat the flesh of the ram, and the loaves in the basket, by the doors of the tabernacle of witness.

The Brenton translation of the Septuagint is in the public domain.