I have long time
`owlam  (o-lawm')
concealed, i.e. the vanishing point; generally, time out of mind (past or future), i.e. (practically) eternity; frequentatively, adverbial (especially with prepositional prefix) always
holden my peace
chashah  (khaw-shaw')
to hush or keep quiet -- hold peace, keep silence, be silent, (be) still.
I have been still
charash  (khaw-rash')
to scratch, i.e. (by implication) to engrave, plough; hence (from the use of tools) to fabricate (of any material)
and refrained
'aphaq  (aw-fak')
to contain, i.e. (reflex.) abstain -- force (oneself), restrain.
myself now will I cry
pa`ah  (paw-aw')
to scream -- cry.
like a travailing woman
yalad  (yaw-lad')
to bear young; causatively, to beget; medically, to act as midwife; specifically, to show lineage
I will destroy
nasham  (naw-sham')
to blow away, i.e. destroy -- destroy.

shamem  (shaw-mame')
to stun (or intransitively, grow numb), i.e. devastate or (figuratively) stupefy (both usually in a passive sense)
and devour
sha'aph  (shaw-af')
to inhale eagerly; figuratively, to cover; by implication, to be angry; also to hasten -- desire (earnestly), devour, haste, pant, snuff up, swallow up.
at once
yachad  (yakh'-ad)
a unit, i.e. (adverb) unitedly -- alike, at all (once), both, likewise, only, (al-)together, withal.