Behold thou desirest
chaphets (khaw-fates')
to incline to; by implication (literally but rarely) to bend; figuratively, to be pleased with, desire
truth
'emeth (eh'-meth)
stability; (figuratively) certainty, truth, trustworthiness -- assured(-ly), establishment, faithful, right, sure, true (-ly, -th), verity.
in the inward parts
tuwchah (too-khaw')
(in the plural only) the kidneys (as being covered); hence (figuratively) the inmost thought -- inward parts.
and in the hidden
catham (saw-tham')
to stop up; by implication, to repair; figuratively, to keep secret -- closed up, hidden, secret, shut out (up), stop.
part thou shalt make me to know
yada` (yaw-dah')
to know (properly, to ascertain by seeing); used in a great variety of senses, figuratively, literally, euphemistically and inferentially
wisdom
chokmah (khok-maw')
wisdom (in a good sense) -- skilful, wisdom, wisely, wit.