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The apostles are uniquely authoritative because being -- in John Knox's terms -- "the community" aspect of the decisive event of the church's coming into being, they are, together with Jesus as "the person" aspect of the event, co-constitutive of it. This means that just as there is no way of holding fast to the faith and witness of the apostles except by holding fast to the Jesus who is the explicit primal ontic source of their authority (their own experience of him as such being its explicit primal noetic source), so there is no way of holding fast to this Jesus except by also holding fast to the faith and witness of the apostles authorized by him as their explicit primal ontic source.

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Wiki MarkupThe two concepts, "primary authority" and "primal source of authority" are correlative in that anything that is either may and must be defined in relation to whatever is the other. This puts more formally what John Knox characteristically expresses in speaking of "the Church and the reality of Christ": "One way of describing the Church is to say that it is the community which remembers Jesus; but one can equally truly define Jesus (in the only really significant meaning of that name for the Christian) as the one who is remembered. It is only as he is remembered \ [_sc_. by the Church\] that he has meaning for either Christian theology or Christian devotion ....\[T\]he human existence of Jesus, insofar as it has continuing being and importance, is a memory of the Church" (_The Church and the Reality of Christ_: 49; "The Church _Is_ Christ's Body": 57). By the same token, if the sole primary authority of the apostles may and must be described as deriving solely from Jesus as its explicit primal ontic source, Jesus himself may and must be defined (in the only really significant meaning of "Jesus" for Christian faith, witness, and theology) as the explicit primal ontic source whence the original and originating witness of the apostles alone derives its primary authority.

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If the Christian witness is constituted as such by the assertions expressed or implied by the original and originating and therefore constitutive Christian witness, then this earliest witness is uniquely authoritative for all Christian witness. For even though it, in turn, is authorized by a source beyond itself -- namely, by the decisive event of its own coming into being -- it is just as true that the only necessary and therefore sufficient condition of any Christian witness's being authorized by this same primal source is that it agree in substance, even if not in form, with this earliest Christian witness.

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