IV. But to come unto that which of all other things in Scripture is most stood upon; that place of St. Paul they say is “of all other most clear, where speaking of those things which are called indifferent, in the end he concludeth, That ‘whatsoever is not of faith is sin.’ But faith is not but in respect of the Word of God. Therefore whatsoever is not done by the Word of God is sin.” Whereunto we answer, that albeit the name of Faith being properly and strictly taken, it must needs have reference unto some uttered word as the object of belief: nevertheless sith the ground of credit is the credibility of things credited; and things are made credible, either by the known condition and quality of the utterer1, or by the manifest likelihood of truth which they have in themselves; hereupon it riseth that whatsoever we are persuaded of, the same we are generally said to believe. In which generality the object of faith may not so narrowly be restrained, as if the same did extend no further than to the only Scriptures of God. “Though,” saith our Saviour, “ye believe not me, believe my works, that ye may know and believe that the Father is in me and I in him2.” “The other disciples said unto Thomas, We have seen the Lord;” but his answer unto them was, “Except I see in his hands the print of the nails, and put my finger into them, I will not believe3.” Can there be any thing more plain than that which by these two sentences appeareth, namely, that there may be a certain belief grounded upon other assurance than Scripture: any thing more clear, than that we are said not only to believe the things which we know by another’s relation, but even whatsoever we are certainly persuaded of, whether it be by reason or by sense?
Forasmuch therefore as it is granted that St. Paul doth mean nothing else by Faith, but only “a full persuasion that that which we do is well done4;” against which kind of faith or persuasion as St. Paul doth count it sin to enterprise any thing, so likewise “some of the very heathen have taught5, as Tully, ‘That nothing ought to be done whereof thou doubtest whether it be right or wrong6;’ whereby it appeareth that even those which had no knowledge of the word of God did see much of the equity of this which the Apostle requireth of a Christian man;” I hope we shall not seem altogether unnecessarily to doubt of the soundness of their opinion, who think simply that nothing but only the word of God can give us assurance in any thing we are to do, and resolve us that we do well. For might not the Jews have been fully persuaded that they did well to think (if they had so thought) that in Christ God the Father was, although the only ground of this their faith had been the wonderful works they saw him do? Might not, yea, did not Thomas fully in the end persuade himself, that he did well to think that body which now was raised to be the same which had been crucified? That which gave Thomas this assurance was his sense; “Thomas, because thou hast seen, thou believest,” saith our Saviour7. What Scripture had Tully for this assurance? Yet I nothing doubt but that they who allege him think he did well to set down in writing a thing so consonant unto truth. Finally, we all believe that the Scriptures of God are sacred, and that they have proceeded from God; ourselves we assure that we do right well in so believing. We have for this point a demonstration sound and infallible. But it is not the word of God which doth or possibly can assure us, that we do well to think it his word. For if any one book of Scripture did give testimony to all, yet still that Scripture which giveth credit to the rest would require another Scripture to give credit unto it, neither could we ever come unto any pause whereon to rest our assurance this way; so that unless beside Scripture there were something which might assure us that we do well, we could not think we do well, no not in being assured that Scripture is a sacred and holy rule of well-doing.
On which determination we might be contented to stay ourselves without further proceeding herein, but that we are drawn on into larger speech by reason of their so great earnestness, who beat more and more upon these last alleged words, as being of all other most pregnant.