Behold for peace
shalowm  (shaw-lome')
safe, i.e. (figuratively) well, happy, friendly; also (abstractly) welfare, i.e. health, prosperity, peace
I had great bitterness
mar  (mar)
bitter; also (as noun) bitterness, or (adverbially) bitterly -- + angry, bitter(-ly, -ness), chafed, discontented, great, heavy.
marar  (maw-rar')
to be (causatively, make) bitter
but thou hast in love
chashaq  (khaw-shak')
to cling, i.e. join, (figuratively) to love, delight in; elliptically to deliver -- have a delight, (have a ) desire, fillet, long, set (in) love.
to my soul
nephesh  (neh'-fesh)
a breathing creature, i.e. animal of (abstractly) vitality; used very widely in a literal, accommodated or figurative sense (bodily or mental)
delivered it from the pit
shachath  (shakh'-ath)
a pit (especially as a trap); figuratively, destruction -- corruption, destruction, ditch, grave, pit.
of corruption
bliy  (bel-ee')
failure, i.e. nothing or destruction; usually (with preposition) without, not yet, because not, as long as, etc.
for thou hast cast
shalak  (shaw-lak)
to throw out, down or away -- adventure, cast (away, down, forth, off, out), hurl, pluck, throw.
all my sins
chet'  (khate)
a crime or its penalty -- fault, grievously, offence, (punishment of) sin.
'achar  (akh-ar')
the hind part; generally used as an adverb or conjunction, after (in various senses)
thy back
gev  (gave)
the back; by analogy, the middle -- + among, back, body.