Examine
bachan (baw-khan')
to test (especially metals); generally and figuratively, to investigate -- examine, prove, tempt, try (trial).
me O LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
and prove
nacah (naw-saw')
to test; by implication, to attempt -- adventure, assay, prove, tempt, try.
me try
tsaraph (tsaw-raf')
to fuse (metal), i.e. refine -- cast, (re-)fine(-er), founder, goldsmith, melt, pure, purge away, try.
my reins
kilyah (kil-yaw')
a kidney (as an essential organ); figuratively, the mind (as the interior self) -- kidneys, reins.
and my heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect