How is Christ building His Church?

... "Knowledge puffeth up..
...but Love edifiefth.. (i.e. ^builds up^)

.. [1 Corinthians 8:1]..

..." And if any man thinketh he knoweth ANYTHING, he KNOWETH NOTHING yet as he ought to know "

.. [8:2]...

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So who can really know "God's Economy" (or God's master building plans & blueprints) as he ought to know it? [Discuss] 20 marks.