My heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
was hot
chamam (khaw-mam')
to be hot -- enflame self, get (have) heat, be (wax) hot, (be, wax) warm (self, at).
within
qereb (keh'-reb)
the nearest part, i.e. the center, whether literal, figurative or adverbial (especially with preposition)
me while I was musing
hagiyg (haw-gheeg')
a murmur, i.e. complaint -- meditation, musing.
the fire
'esh (aysh)
fire -- burning, fiery, fire, flaming, hot.
burned
ba`ar (baw-ar')
to kindle, i.e. consume (by fire or by eating); also to be(-come) brutish
then
'az (awz)
at that time or place; also as a conjunction, therefore -- beginning, for, from, hitherto, now, of old, once, since, then, at which time, yet.
spake
dabar (daw-bar')
perhaps properly, to arrange; but used figuratively (of words), to speak; rarely (in a destructive sense) to subdue
I with my tongue
lashown (law-shone')
the tongue (of man or animals), used literally (as the instrument of licking, eating, or speech), and figuratively (speech, an ingot, a fork of flame, a cove of water)