Nor do we understand hereby, that God has given us an account of all his secret counsels and purposes relating to the event of things, or the final estate of particular persons, abstracted from those marks on which our hope of salvation is founded, or their outward condition, or the good or bad success that shall attend their undertakings in the world, or the time of their living therein: these, and many more events of the like nature, are secrets which we are not to enquire into, God having not thought fit to reveal them in his word, for wise ends best known to himself, which shews his sovereignty, with respect to the matter of revelation; Secret things belong unto the Lord our God; but those things which are revealed belong unto us, and to our children, Deut. xxix. 29. When Peter was over-curious in enquiring concerning the future estate or condition of John, our Saviour gives him this tacit reproof, What is that to thee? John xxi. 21, 22.
Nor are we to suppose that the divine perfections, which are infinite, are fully and adequately revealed to man, since it is impossible that they should, from the nature of the thing; for that which is in itself incomprehensible, cannot be so revealed that we should be able fully to comprehend it, though that which is possible, or at least necessary, to be known of God, is clearly revealed to us.
Again, we do not suppose that every doctrine, that is to be assented to as an article of faith, is revealed in express words in scripture, since many truths are to be deduced from it by just and necessary consequences, which thereby become a rule of faith.
Nor are we to suppose that every part of scripture fully and clearly discovers all those things which are contained in the whole of it, since there was farther light given to the church, by degrees, in succeeding ages, as it grew up, from its infant-state, to a state of perfect manhood; therefore there is a clearer and fuller revelation of the glorious mysteries of the gospel, under the New Testament-dispensation, than there was before it. The apostle uses the same metaphorical way of speaking, when he compares the state of the church, under the ceremonial law, to that of an heir under age, or of children under the direction of tutors and governors, whose instruction and advances in knowledge are proportioned to their age; so God revealed his word at sundry times, as well as in divers manners, Gal. iv. 1, 3. Heb. i. 1.
The word of God, accompanied with those additional helps before mentioned, for the churches understanding the sense thereof, was always, indeed, sufficient to lead men into the knowledge of divine truth; but the canon being compleated, it is so now in an eminent degree; and it is agreeable to the divine perfections that such a rule should be given; for since salvation could not be attained, nor God glorified, without a discovery of those means, which are conducive thereto, it is not consistent with his wisdom and goodness that we should be left at the utmost uncertainty as to this matter, and, at the same time, rendered incapable of the highest privileges which attend instituted worship. Can we suppose that, when all other things necessary to salvation are adjusted, and many insuperable difficulties surmounted, and an invitation given to come and partake of it, that God should lay such a bar in our way, that it should be impossible for us to attain it, as being without a sufficient rule?
And since none but God can give us such an one, it is inconsistent with his sovereignty to leave it to men, to prescribe what is acceptable in his sight. They may, indeed, give laws, and thereby oblige their subjects to obedience; but these must be such as are within their own sphere; their power does not extend itself to religious matters, so that our faith and duty to God should depend upon their will; for this would be a bold presumption, and extending their authority and influence beyond due bounds; therefore since a rule of faith is necessary, we must conclude that God has given us such an one; and it must certainly be worthy of himself, and therefore perfect, and every way sufficient to answer the end thereof.
That it is so, farther appears from the event, or from the happy consequences of our obedience to it; from that peace, joy, and holiness, which believers are made partakers of, while steadfastly adhering to this rule: thus it is said, that through comfort of the scriptures they have hope, Rom. xv. 4. and that hereby the man of God is made wise to salvation, and perfect, thoroughly furnished unto all good works, 2 Tim. iii. 15, 17. The perfection of the law is demonstrated, by the Psalmist, by its effects, in that it converts the soul, makes wise the simple, rejoices the heart, enlightens the eyes, Psal. xix. 7, 8.
We might farther argue, that the scripture is a perfect rule of faith, from those threatnings which are denounced against them, who pretend to add to, or take from it; this was strictly forbidden, even when there was but a part of scripture committed to writing. Thus says God; Ye shall not add to the word which I command you; neither shall ye diminish ought from it, Deut. iv. 2. And the apostle denounces an anathema against any one who should pretend to preach any other gospel, than that which he had received from God, Gal. i. 8, 9. And, in the close of the scripture, our Saviour testifies, to every man, that if any should add to these things, God would add to him the plagues written in this book. And if any should take away from this book, God would take away his part out of the book of life, Rev. xxii. 18, 19.
Thus having considered the scripture as a rule of faith, we proceed to shew what are the properties which belong to it as such.
1. A rule, when it is designed for general use, must have the sanction of public authority: thus human laws, by which a nation is to be governed, which are a rule to determine the goodness or badness of men’s actions, and their desert of rewards or punishments accordingly, must be established by public authority. Even so the scripture is a rule of faith, as it contains the divine laws, by which the actions of men are to be tried, together with the ground which some have to expect future blessedness, and others to fear punishments threatened to those who walk not according to this rule.