The law
towrah (to-raw')
a precept or statute, especially the Decalogue or Pentateuch -- law.
of the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
is perfect
tamiym (taw-meem')
without blemish, complete, full, perfect, sincerely (-ity), sound, without spot, undefiled, upright(-ly), whole.
converting
shuwb (shoob)
to turn back (hence, away) transitively or intransitively, literally or figuratively
the 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)
the testimony
`eduwth (ay-dooth')
testimony -- testimony, witness.
of the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
is sure
'aman (aw-man')
to build up or support; to foster as a parent or nurse; figuratively to render (or be) firm or faithful, to trust or believe, to be permanent or quiet; morally to be true or certain
making wise
chakam (khaw-kam')
exceeding, teach wisdom, be (make self, shew self) wise, deal (never so) wisely, make wiser.
the simple
pthiy (peth-ee')
silly (i.e. seducible) -- foolish, simple(-icity, one).