But the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
hardened
chazaq (khaw-zak')
to fasten upon; hence, to seize, be strong (figuratively, courageous, causatively strengthen, cure, help, repair, fortify), obstinate; to bind, restrain, conquer
Pharaoh's
Par`oh (par-o')
Paroh, a general title of Egyptian kings -- Pharaoh.
heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
and he would
'abah (aw-baw')
to breathe after, i.e. (figuratively) to be acquiescent -- consent, rest content will, be willing.
not let them go
shalach (shaw-lakh')
to send away, for, or out (in a great variety of applications)
