See Ephesians.
There is no Church in Ephesians...The church however is the body of Christ with Jesus at the head (not a pope) which consists of saved members who have trusted Jesus Christ to be their Savior...
(See the Bible)
By reading that 'book' that we are told to read, one knows that...
(See the Bible)
Well Paul mentions the Church and says Christ is its head. Not that that counts for anything.