And thou shalt anoint
mashach (maw-shakh')
to rub with oil, i.e. to anoint; by implication, to consecrate; also to paint -- anoint, paint.
Aaron
'Aharown (a-har-one')
Aharon, the brother of Moses -- Aaron.
and his sons
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
and consecrate
qadash (kaw-dash')
to be (causatively, make, pronounce or observe as) clean (ceremonially or morally)
them that they may minister unto me in the priest's office
kahan (kaw-han')
to officiate as a priest; figuratively, to put on regalia -- deck, be (do the office of a, execute the, minister in the) priest('s office).