either/or choice, but it is the ministry of those called to be apostles which produces the obedience of faith. The faith of those who display this response depends upon God’s effective calling of others, and so the primary emphasis is on divine initiative rather than human response. Yet, precisely given this dependence of the faith of others on the ministry of the apostles, one might point to that ministry as itself providing a vital human mediation of divine calling. By responding obediently to
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