I do not believe he is talking about Satan in Ephesians 3:10.....as a matter of fact the King James translation of that verse is very misleading......and even if the King James translation is used.....the question begs to be answered....WHY or HOW could God possibly USE the CHURCH to TEACH SATAN about the many sided (manifold) aspects of God's Wisdom.....?? AND SORRY....JESUS contradicts whoever taught you.........
New American Standard Bible
So that the manifold wisdom of God might
now be made known through the church to the rulers and the authorities in the heavenly places.
To the intent that now unto the principalities and powers in heavenly
placesmight be known by the church the manifold wisdom of God.
AND.....EVEN the words of JESUS proves that SATAN is on the earth ruling.....--->He wrote to the Church of Pergamos and said......
I know thy works,
and where thou dwellest, even where Satan's seat
is: and thou holdest fast my name, and hast not denied my faith, even in those days wherein Antipas was my faithful martyr, who was slain among you,
where Satan dwelleth.
Seat
thronos: a throne
Original Word: θρόνος, ου, ὁ
Part of Speech: Noun, Masculine
Transliteration: thronos
Phonetic Spelling: (thron'-os)
Definition: a throne
Usage: a (king's) throne, seat; meton: power, dominion; a potentate.
dwelleth
katoikeó: to inhabit, to settle
Original Word: κατοικέω
Part of Speech: Verb
Transliteration: katoikeó
Phonetic Spelling: (kat-oy-keh'-o)
Definition: to inhabit, to settle
Usage: I dwell in, settle in, am established in (permanently), inhabit.