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The work of God can only be carried on by the power of God. The church is a spiritual organism fighting spiritual battles: only spiritual power can make it perform as God ordained.

Jim Cymbala (2010). “Fresh Wind Fresh Fire: What Happens When God's Spirit Invades the Hearts of His People”, p.109, ReadHowYouWant.com
The work of God can only be carried on by the power of God. The church is a spiritual organism fighting spiritual battles: only spiritual power can make it perform as God ordained.