They mount up
`alah (aw-law')
to ascend, intransitively (be high) or actively (mount); used in a great variety of senses, primary and secondary, literal and figurative (as follow)
to the heaven
shamayim (shaw-mah'-yim)
air, astrologer, heaven(-s).
they go down
yarad (yaw-rad')
to descend; causatively, to bring down (in all the above applications)
again to the depths
thowm (teh-home')
an abyss (as a surging mass of water), especially the deep (the main sea or the subterranean water-supply) -- deep (place), depth.
their 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)
is melted
muwg (moog)
to melt, i.e. literally (to soften, flow down, disappear), or figuratively (to fear, faint) -- consume, dissolve, (be) faint(-hearted), melt (away), make soft.
because of trouble
ra` (rah)
bad or (as noun) evil (natural or moral)one), worse(-st), wretchedness, wrong. (Incl. feminine raaah; as adjective or noun.).