Because they provoked
marah (maw-raw')
to be (causatively, make) bitter (or unpleasant); (figuratively) to rebel (or resist; causatively, to provoke)
his spirit
ruwach (roo'-akh)
wind; by resemblance breath, i.e. a sensible (or even violent) exhalation; figuratively, life, anger, unsubstantiality; by extension, a region of the sky; by resemblance spirit, but only of a rational being
so that he spake unadvisedly
bata' (baw-taw')
to babble; hence, to vociferate angrily -- pronounce, speak (unadvisedly).
with his lips
saphah (saw-faw')
the lip (as a natural boundary); by implication, language; by analogy, a margin (of a vessel, water, cloth, etc.)