For God
'elohiym (el-o-heem')
angels, exceeding, God (gods)(-dess, -ly), (very) great, judges, mighty.
is my King
melek (meh'-lek)
a king -- king, royal.
of old
qedem (keh'-dem)
the front, of place (absolutely, the fore part, relatively the East) or time (antiquity); often used adverbially (before, anciently, eastward)
working
pa`al (paw-al')
to do or make (systematically and habitually), especially to practise -- commit, (evil-) do(-er), make(-r), ordain, work(-er).
salvation
yshuw`ah (yesh-oo'-aw)
something saved, i.e. (abstractly) deliverance; hence, aid, victory, prosperity -- deliverance, health, help(-ing), salvation, save, saving (health), welfare.
in the midst
qereb (keh'-reb)
the nearest part, i.e. the center, whether literal, figurative or adverbial (especially with preposition)
of the earth
'erets (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.