One of the mysteries of the English language finally explained.
With respect to religious or pastoral matters; for ecclesiastical (rather than civil) purposes.
Of a church, parish, minister, etc.: constituted or appointed for religious (rather than civil) purposes; of or relating to this.
Mid 18th century. From post-classical Latin quoad sacra from classical Latin quoad + sacra sacred things.
quoad sacra/ˌkwəʊad ˈseɪkrə//ˌkwəʊad ˈsakrə/
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