holding the mystery of the faith in a pure conscience.

 (iv) The Church is the buttress (hedraioma, G1477) of the truth. The buttress is the support of the building. It keeps it standing intact. In a world which does not wish to face the truth, the Church holds it up for all to see. In a world which would often gladly eliminate unwelcome truth, the Church supports it against all who would seek to destroy it. 