The Gospel Affirms that:

“The Communion of Saints”: is the Spiritual Assembly of The Repented and Baptized: for through rebirth
have they become ‘Christian’ and ‘Saints‘.

“The Holy Christian Church”: is the Spiritual Assembly of The Repented and Baptized: for only thus have they obtained ‘Holiness’, rendering them incapable of ‘Sin’.

“A Church House”: Is a mere gathering place for believers and Christians. And so, such a place can only be “Holy” if all members are successfully repented and baptised.

Note: the term “Holy”, in The Holy Christian Church, is superfluous, because the Assembly of the Repented and Baptized (The Christian Church) by default,  is “Holy”, which = Incapable of Sin.

JO1 3: 9 Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.