They are corrupt
muwq (mook)
to jeer, i.e. (intens.) blaspheme -- be corrupt.
and speak
dabar (daw-bar')
perhaps properly, to arrange; but used figuratively (of words), to speak; rarely (in a destructive sense) to subdue
wickedly
ra` (rah)
bad or (as noun) evil (natural or moral)one), worse(-st), wretchedness, wrong. (Incl. feminine raaah; as adjective or noun.).
concerning oppression
`osheq (o'-shek)
injury, fraud, (subjectively) distress, (concretely) unjust gain -- cruelly, extortion, oppression, thing (deceitfully gotten).
they speak
dabar (daw-bar')
perhaps properly, to arrange; but used figuratively (of words), to speak; rarely (in a destructive sense) to subdue
loftily
marowm (maw-rome')
altitude, i.e. concretely (an elevated place), abstractly (elevation, figuratively (elation), or adverbially (aloft) -- (far) above, dignity, haughty, height, (most, on) high (one, place), loftily, upward.