Open
pathach (paw-thakh')
to open wide; specifically, to loosen, begin, plough, carve
thy mouth
peh (peh)
the mouth (as the means of blowing), whether literal or figurative (particularly speech); specifically edge, portion or side; adverbially (with preposition) according to
for the dumb
'illem (il-lame')
speechless -- dumb (man).
in the cause
duwn (doon)
judgement (the suit, justice, sentence or tribunal); by impl. also strife -- cause, judgement, plea, strife.
of all such as are appointed
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.
to destruction
chalowph (khal-ofe')
surviving; by implication (collectively) orphans -- destruction.