Such as sit
yashab (yaw-shab')
to sit down (specifically as judge. in ambush, in quiet); by implication, to dwell, to remain; causatively, to settle, to marry
in darkness
choshek (kho-shek')
the dark; hence (literally) darkness; figuratively, misery, destruction, death, ignorance, sorrow, wickedness -- dark(-ness), night, obscurity.
and in the shadow of death
tsalmaveth (tsal-maw'-veth)
shade of death, i.e. the grave (figuratively, calamity) -- shadow of death.
being bound
'aciyr (aw-sere')
bound, i.e. a captive -- (those which are) bound, prisoner.
in affliction
`oniy (on-ee')
depression, i.e. misery -- afflicted(-ion), trouble.
and iron
barzel (bar-zel')
iron (as cutting); by extension, an iron implement -- (ax) head, iron.