And this argument might be carried much further, if they would reflect how great is the brilliancy of evidence in behalf of the Primacy, compared with sundry other capital Christian doctrines, some or all of which they hold without question: such are the consubstantiality of the Trinity, the unity of Christ's Person, the propagation of original sin, the eternity of punishment, regeneration in baptism, and gratuitous justification. They will find, on reflection, that they hold these doctrines not because they are proved by stronger scriptural evidence than the Primacy, for quite the reverse is the truth, nor because they are encompassed with less obscurity in their own character, for the subject matter of the Primacy is clear and distinct in comparison with them all, but because the doctrines do not oppose the particular tradition which they have received, and so their minds are not set against them. Let them once come to compare the whole evidence for the Primacy, scriptural, traditional, analogical, and historical, which last alone comprehends the fourteen heads above enumerated, with the same evidence in behalf of any or all of those, and they cannot but admit its great superiority. 3. But we must proceed to the _third_ criterion, which increases not a little the evidence from revelation for the Primacy. For Catholics and Protestants are agreed in considering _analogy_ as one of the best helps in interpretation, and in assigning to it the force of a real parallelism, a proceeding which rests on the necessity of the Scripture presenting one whole and harmonious body of doctrine in its several parts. And in order not to deprive this help of its efficacy, both parties give two conditions for its exercise, the first, _that no sense be put upon passages of Scripture contrary to analogy_; the second, _that no violence be used to the language of Scripture to conform it with analogy, which would be imposing on holy writ the sense wanted from it_. These two faults carefully avoided, analogy is of great service, and throws much light upon interpretation.