R.C. Sproul, The Purpose of God, An Exposition of Ephesians, Christian Focus Publications, 1994, p. 95.
The Greek work for church, ecclesia, is made up of a prefix and a root. The prefix is ek – out of. The root is the verb coleo, to call. The church in the New Testament is made up of those who are called out from the world, from darkness, from damnation, from paganism, to become members of the body of Christ.
R.C. Sproul, The Purpose of God, An Exposition of Ephesians, Christian Focus Publications, 1994, p. 95.