I intreated
chalah (khaw-law')
to be rubbed or worn; hence (figuratively) to be weak, sick, afflicted; or (causatively) to grieve, make sick; also to stroke (in flattering), entreat
thy favour
paniym (paw-neem')
the face (as the part that turns); used in a great variety of applications (literally and figuratively); also (with prepositional prefix) as a preposition (before, etc.)
with my whole heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
be merciful
chanan (khaw-nan')
to bend or stoop in kindness to an inferior; to favor, bestow; causatively to implore (i.e. move to favor by petition)
unto me according to thy word
'imrah (im-raw')
commandment, speech, word.