For 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.
shall wash
rachats (raw-khats')
to lave (the whole or a part of a thing) -- bathe (self), wash (self).
their hands
yad (yawd)
a hand (the open one (indicating power, means, direction, etc.),
and their feet
regel (reh'-gel)
a foot (as used in walking); by implication, a step; by euphem. the pudenda -- be able to endure, according as, after, coming, follow, (broken-)foot(-ed, -stool), great toe, haunt, journey, leg, piss, possession, time.
thereat