A church (in the sense of a group of believers gathered unto the Lord Jesus Christ for the purposes of worshipping the One True God and growing in the knowledge of God and of His Christ)!
But one of heaven’s training centres on earth,
Building an army for the Lord of Hosts, that is maintaining and expanding grounds for Christ in the hearts of men.
the saints for the work of ministry, for the edifying of the body of Christ, till we all come to the unity of the faith and of the knowledge of the Son of God, to a perfect man, to the measure of the stature of the fullness of Christ; that we should no longer be children, tossed to and fro and carried about with every wind of doctrine, by the trickery of men, in the cunning craftiness of deceitful plotting (Ephesians 4:12-14, NKJV)