This is the law
towrah (to-raw')
a precept or statute, especially the Decalogue or Pentateuch -- law.
for all manner of plague
nega` (neh'-gah)
a blow (figuratively, infliction); also (by implication) a spot (concretely, a leprous person or dress) -- plague, sore, stricken, stripe, stroke, wound.
of leprosy
tsara`ath (tsaw-rah'-ath)
leprosy -- leprosy.
and scall
netheq (neh'-thek)
scurf -- (dry) scall.