Thus, (1) the principium cognoscendi, the principle of knowing or cognitive foundation, is a term applied to Scripture as the noetic or epistemological principium theologiae, without which there could be no true knowledge of God and therefore no theological system; it is sometimes further distinguished into the principium cognoscendi externum, the external, written Word, and the principium cognoscendi internum, the internal principle of faith which knows the external Word and answers its call, i.e.,
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