If my people
`am  (am)
a people (as a congregated unit); specifically, a tribe (as those of Israel); hence (collectively) troops or attendants; figuratively, a flock -- folk, men, nation, people.
which are called
qara'  (kaw-raw')
to call out to (i.e. properly, address by name, but used in a wide variety of applications)
by my name
shem  (shame)
an appellation, as a mark or memorial of individuality; by implication honor, authority, character -- + base, (in-)fame(-ous), named(-d), renown, report.
shall humble
kana`  (kaw-nah')
to bend the knee; hence, to humiliate, vanquish -- bring down (low), into subjection, under, humble (self), subdue.
themselves and pray
palal  (paw-lal')
to judge (officially or mentally); by extension, to intercede, pray -- intreat, judge(-ment), (make) pray(-er, -ing), make supplication.
and seek
baqash  (baw-kash')
to search out (by any method, specifically in worship or prayer); by implication, to strive after
my face
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.)
and turn
shuwb  (shoob)
to turn back (hence, away) transitively or intransitively, literally or figuratively
from their wicked
ra`  (rah)
bad or (as noun) evil (natural or moral)one), worse(-st), wretchedness, wrong. (Incl. feminine raaah; as adjective or noun.).
derek  (deh'-rek)
a road (as trodden); figuratively, a course of life or mode of action, often adverb
then will I hear
shama`  (shaw-mah')
to hear intelligently (often with implication of attention, obedience, etc.; causatively, to tell, etc.)
from heaven
shamayim  (shaw-mah'-yim)
air, astrologer, heaven(-s).
and will forgive
calach  (saw-lakh')
to forgive -- forgive, pardon, spare.
their sin
chatta'ah  (khat-taw-aw')
an offence (sometimes habitual sinfulness), and its penalty, occasion, sacrifice, or expiation; also (concretely) an offender
and will heal
rapha'  (raw-faw')
to mend (by stitching), i.e. (figuratively) to cure -- cure, (cause to) heal, physician, repair, thoroughly, make whole.
their land
'erets  (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.