And I will pour
shaphak  (shaw-fak')
to spill forth (blood, a libation, liquid metal; or even a solid, i.e. to mound up); also (figuratively) to expend (life, soul, complaint, money, etc.); intensively, to sprawl out -- cast (up), gush out, pour (out), shed(-der, out), slip.
upon the house
bayith  (bah'-yith)
a house (in the greatest variation of applications, especially family, etc.)
of David
David  (daw-veed')
loving; David, the youngest son of Jesse -- David.
and upon the inhabitants
yashab  (yaw-shab')
to sit down (specifically as judge. in ambush, in quiet); by implication, to dwell, to remain; causatively, to settle, to marry
of Jerusalem
Yruwshalaim  (yer-oo-shaw-lah'-im)
founded peaceful; Jerushalaim or Jerushalem, the capital city of Palestine -- Jerusalem.
the 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
of grace
chen  (khane)
graciousness, i.e. subjective (kindness, favor) or objective (beauty) -- favour, grace(-ious), pleasant, precious, (well-)favoured.
and of supplications
tachanuwn  (takh-an-oon')
earnest prayer -- intreaty, supplication.
and they shall look
nabat  (naw-bat')
to scan, i.e. look intently at; by implication, to regard with pleasure, favor or care -- (cause to) behold, consider, look (down), regard, have respect, see.
upon me whom they have pierced
daqar  (daw-kar')
to stab; by analogy, to starve; figuratively, to revile -- pierce, strike (thrust) through, wound.
and they shall mourn
micepd  (mis-pade')
a lamentation -- lamentation, one mourneth, mourning, wailing.
for him as one mourneth
caphad  (saw-fad')
to tear the hair and beat the breasts (as Orientals do in grief); generally to lament; by implication, to wail -- lament, mourn(-er), wail.
for his only
yachiyd  (yaw-kheed')
united, i.e. sole; by implication, beloved; also lonely; (feminine) the life (as not to be replaced) -- darling, desolate, only (child, son), solitary.
son and shall be in bitterness
marar  (maw-rar')
to be (causatively, make) bitter
for him as one that is in bitterness
marar  (maw-rar')
to be (causatively, make) bitter
for his firstborn
bkowr  (bek-ore')
firstborn; hence, chief -- eldest (son), firstborn(-ling).