"In this passing over,
if it is to be perfect,
all intellectual activities must be left behind
and the height of our affection
must be totally transferred and transformed
into God.
This, however, is mystical and most secret,
which no one knows
except him who receives it
no one receives
except him who desires it,
and no one desires except him
who is inflamed in his very marrow by the fire of the Holy Spirit
whom Christ sent into the world.
And therefore the Apostle says that
this mystical wisdom is revealed
by the Holy Spirit."

St. Bonaventure
Apoc. 2:17
Cf. Luke 12:49
Cf, 1Cor. 2:10ff.