Seven
sheba` (sheh'-bah)
a primitive cardinal number; seven (as the sacred full one); also (adverbially) seven times; by implication, a week; by extension, an indefinite number
days
yowm (yome)
a day (as the warm hours),
shall they purge
kaphar (kaw-far')
to cover (specifically with bitumen); figuratively, to expiate or condone, to placate or cance
the altar
mizbeach (miz-bay'-akh)
an altar -- altar.
and purify
taher (taw-hare')
be (make, make self, pronounce) clean, cleanse (self), purge, purify(-ier, self).
it and they shall consecrate themselves
male' (maw-lay')
a primitive root, to fill or (intransitively) be full of, in a wide application (literally and figuratively)
yad (yawd)
a hand (the open one (indicating power, means, direction, etc.),