Behold they belch out
naba` (naw-bah')
to gush forth; figuratively, to utter (good or bad words); specifically, to emit (a foul odor) -- belch out, flowing, pour out, send forth, utter (abundantly).
with their 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
swords
chereb (kheh'-reb)
drought; also a cutting instrument (from its destructive effect), as a knife, sword, or other sharp implement -- axe, dagger, knife, mattock, sword, tool.
are in their lips
saphah (saw-faw')
the lip (as a natural boundary); by implication, language; by analogy, a margin (of a vessel, water, cloth, etc.)
for who say they doth hear
shama` (shaw-mah')
to hear intelligently (often with implication of attention, obedience, etc.; causatively, to tell, etc.)