When wisdom
chokmah (khok-maw')
wisdom (in a good sense) -- skilful, wisdom, wisely, wit.
entereth
bow' (bo)
to go or come (in a wide variety of applications)
into thine heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
and knowledge
da`ath (dah'-ath)
knowledge -- cunning, (ig-)norantly, know(-ledge), (un-)awares (wittingly).
is pleasant
na`em (naw-ame')
to be agreeable -- pass in beauty, be delight, be pleasant, be sweet.
unto thy 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)