An apologetic for the development of doctrine within the Catholic Church.
Man was not given religious truth as though from a Scholastic theologian, nicely laid out and fully indexed.
Doctrines had to be thought out, lived out in the liturgical life of the Church, even pieced together by the Fathers and ecumenical councils.
In this way, the Church has gained an ever-deepening understanding of the deposit of faith that had been "once for all delivered" to it by Christ and the apostles (cf. Jude 3).
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