And this leads us to consider the method which some divines have taken, in using similitudes to explain the doctrine of the Trinity, which, at best, tend only to illustrate, and not to prove a doctrine: and we can hardly make use of this method of illustrating this doctrine, without conveying some ideas, which are unbecoming, if not subversive thereof; and while we pretend to explain that which is in itself inexplicable, we do no service to the truth.

I shall here give a short specimen of this matter, that hereby we may see how some have unwarily weakened the cause which they have been maintaining. Some have taken a similitude from three of the divine perfections, viz. that there are three invisibles of God; power, wisdom, and goodness. Power creates, wisdom governs, and goodness conserves; and so they have gone on to explain this doctrine, till they had almost given it into the hands of the Sabellians: and, indeed, they might have instanced in more divine perfections than three, had it been to their purpose.

Again, others have explained this doctrine by some resemblance which they apprehend to be of it in man; and so they speak of the soul as a principle of a threefold life, rational, sensitive, and vegetative. Others speak of three causes concurring to produce the same effect; such as the efficient, constitutive and final cause. Others have taken their similitude from inanimate things; as the sun, in which there is light, heat, and motion, which are inseparably connected together, and tend to produce the same effects.

Moreover, others illustrate it by a similitude, taken from a fountain, in which there is the spring in the bowels of the earth, the water bubbling out of the earth, and the stream diffusing itself in a perpetual course, receiving all it communicates from the fountain. I am sorry there is occasion to caution any against this method of explaining the doctrine of the Trinity. But these, and many other similitudes of the like nature, we find in the writings of some, who consider not what a handle they give to the common enemy. There are, indeed, in most of them, three things, which are said, in different respects, to be one; but we may observe, that all these similitudes, and others of the like nature, brought to illustrate this doctrine, lead us to think of the whole divided into those parts, of which they consist, whereof they take notice of the number three; or they speak of three properties of the same thing; and if their wit and fancy saw it needful to speak of more than three, the same method of illustrating would serve their purpose, as much as it does the end for which they bring it. Therefore I would conclude this head, by using the words of God to Job, Who is this that darkeneth counsel by words without knowledge? Job xxxviii. 2. Who are these, that, by pretending to illustrate the doctrine of the Trinity by similitudes, do that, which, though very foreign to their design, tends to pervert it?

6. We shall now consider what general rules may be observed for our understanding those scriptures, on which our faith, with respect to the doctrine of the Trinity, is founded; and since it is a doctrine of pure revelation, as has been before observed, we must keep close to scripture, even to the words thereof, where they are express and distinct, as to this matter; and to consequences deduced from it, so far as they are just, and self-evident; and, at the same time, while we are sensible that we cannot comprehend this mystery, we must take care that we pretend not to be wise above what is revealed. Now there are some rules, which may be of use to us, in our enquiries into the sense of scripture concerning this doctrine; as,

(1.) We must not suppose that the words of scripture, relating thereunto, are to be taken in a sense, which can be known by none but criticks, as though it were designed only for them to understand; or that the unlearned part of the world should be left in the dark, or led astray, as to several things contained in this important doctrine. Thus we are not to suppose that we are at a loss as to the proper sense of the word God; or could hardly know how to direct our faith and worship, founded thereon, without the help of criticism; or, for want of being acquainted with some distinctions, concerning one that may be called God by nature, or the supreme God, and others who may be called gods by office, or subordinate gods, we should be led to ascribe divine honour where it is not due; or else we must be able to distinguish also concerning worship, and, instead of honouring the Son as we honour the Father, must give him an inferior kind of divine worship, short of what is due to the Father. This we have no scripture warrant for; neither are we led by the scriptures to have any notion of a middle being between God and the creature, or one that is not properly God, so as the Father is, and yet more than a creature, as though there were a medium between finite and infinite; neither are we led, by scripture, to conceive of any being, that has an eternal duration, whose eternity is supposed to be before time, and yet not the same with the eternal duration of the Father. These things we shall have occasion to mention in their proper place, and therefore need make no farther use of them at present, but only to observe, from hence, how intelligible the scripture would be in what relates to this doctrine, if the words thereof had not a plain and determinate sense; but we must make use of these methods of reasoning, if we would arrive to the meaning thereof.

(2.) If some divine perfections are attributed in scripture to the Son and Spirit, all the perfections of the divine nature, may, by a just consequence from thence, be proved to belong to them, by reason of the simplicity and unity thereof: therefore, if we can prove, from scripture, that they have some perfections ascribed to them, which, I hope, it will not be a difficult matter to do, we are not to suppose that our argument is defective, or that the doctrine of the Trinity is not sufficiently maintained, if we cannot produce a scripture to prove every perfection of the divine nature to be ascribed to them.

(3.) When any thing is mentioned in scripture, concerning our Saviour, or the Holy Spirit, which argues an inferiority to the Father, this is to be understood consistently with other scriptures, which speak of their having the same divine nature; since scripture does not, in the least, contradict itself; and how this may be done, will be farther considered under a following head.

(4.) If we have sufficient arguments to convince us of the truth of this doctrine, our faith ought not to be shaken, though we cannot fully understand the sense of some scriptures, which are brought to support the contrary; not that we are to suppose that the scripture gives countenance to two opposite doctrines: but a person may be fully satisfied concerning the sense of those scriptures that contain the doctrine of the Trinity, and yet not be supposed perfectly to understand the meaning of every word or phrase used in scripture, or of some particular texts, which are sometimes brought to support the contrary doctrine; so that objections may be brought, which he is not able readily to reply to. Shall he therefore deny the truth, because he cannot remove all the difficulties that seem to lie in the way of it? That would be to part with it at too easy a rate, which, when he has done, he will find greater difficulties attending the contrary scheme of doctrine. Do they object, that we believe things contrary to reason, because we assert the incomprehensibleness of divine mysteries? or that we are Tritheists, because we believe that there are three Persons in the Godhead, and cannot exactly determine the difference between divine and human personality? We could, on the other hand, point at some difficulties, that they cannot easily surmount. What shall we think of the head of giving divine worship to our Saviour, when, at the same time, they deny him to have those perfections, that denominate him God in the same sense as the Father is so called? The Socinians found it very difficult, when the matter was disputed among themselves, to reconcile their practice with their sentiments, when they worshipped him, whose Deity they denied. And the Arians will find that this objection equally affects their scheme; and it will be no less difficult for them to reconcile Christ’s character, as Redeemer, Governor of the world, Judge of quick and dead, with their low ideas of him, when denying his proper Deity. These things we only mention occasionally at present, that it may not be thought that the doctrine of the Trinity is exposed to greater difficulties than the contrary doctrine, to the end that they who are not furnished with all those qualifications, which are necessary for its defence, may not reckon those arguments, by which they have been convinced of the truth thereof, less valid, because they are not able, at present, to answer all the objections that may be brought against them.

(5.) The weight of several arguments, taken from scripture, to prove this doctrine, is to be considered, as well as the arguments themselves; we do not pretend that every one of them is equally conclusive; there are some, which are oftentimes brought to support it, which we can lay no great stress upon, and therefore shall omit to mention them, among other arguments brought to that purpose, lest we should give occasion to the adversary to insult, or conclude that we take any thing for an argument that has been brought as such to prove this doctrine. Therefore we will not pretend to prove, or peremptorily to determine, that the doctrine of the Trinity is contained in those words of the Psalmist, Psal. xxxiii. 6. By the word of the Lord were the heavens made, and all the Hosts of them by the breath of his mouth. Nor will we pretend to prove this doctrine from the threefold repetition of the word Jehovah, in the form of benediction to be used by the high priest, Numb. vi. 24, 25, 26. The Lord bless thee, and keep thee; the Lord make his face to shine upon thee, and be gracious unto thee; the Lord lift up his countenance upon thee, and give thee peace. Nor do we lay any stress on the three-fold repetition of the word Holy, holy, holy, is the Lord of Hosts, Isa. vi. 3. though we shall shew, in its proper place, that there are several things in this chapter, which prove this doctrine. However, if at any time, together with arguments that are more conclusive, we bring some that are less so; this use may be made of it, to shew how the scripture way of speaking is consistent therewith in those places that do not so directly prove it. This we thought proper to mention, because it is a very common thing for those, who cannot answer the most weighty arguments that are brought to support a doctrine, to bend their greatest force against those which have the least strength; and then to triumph, as though they had gained the victory, when they have only done it in what respects that which is less material.