Divinity is a curious, well-composed frame. As it is not enough that you have all the parts of your watch or clock, but you must see that every part be in its proper place, or else it will not go, or answer its end; so it is not enough that you know the several parts of divinity or duty, unless you know them in their true order and place. You may be confounded before you are aware, and led into many dangerous errors, by mistaking the order of several truths; and you may be misguided into heinous sins, by mistaking the degrees and order of duties; as, when duties of piety and charity seem to be competitors; and when you think that the commands of men contradict the commands of God; and when the substance and the circumstances or modes of duty are in question before you as inconsistent; or when the means seemeth to cease to be a means, by crossing of the end: and in abundance of such cases, you cannot easily conceive what a snare it may prove to you, to be ignorant of the methods and ranks of duty.
_Object._ If that be so, what man can choose but be confounded in his religion; when there be so few that observe any method at all, and few that agree in method, and none that hath published a scheme or method so exact and clear, as to be commonly approved by divines themselves? What then can ignorant christians do?
_Answ._ Divinity is like a tree that hath one trunk,[51] and thence a few greater arms or boughs, and thence a thousand smaller branches; or like the veins, or nerves, or arteries in the body, that have first one or few trunks divided into more, and those into a few more, and those into more, till they multiply at last into more than can easily be seen or numbered. Now it is easy for any man to begin at the chief trunk, and to discern the first divisions, and the next, though not to comprehend the number and order of all the extreme and smaller branches. So is it in divinity: it is not very hard to begin at the unity of the eternal God-head, and see there a Trinity of Persons, and of primary attributes, and of relations; and to arise to the principal attributes and works of God as in these relations, and to the relations of man to God, and to the great duties of these relations, to discern God's covenants and chiefest laws, and the duty of man in obedience thereto, and the judgment of God in the execution of his sanctions; though yet many particular truths be not understood. And he that beginneth, and proceedeth as he ought, doth know methodically so much as he knoweth; and he is in the right way to the knowledge of more: and the great mercy of God hath laid so great a necessity on us to know these few points that are easily known, and so much less need of knowing the many small particulars, that a mean christian may live uprightly, and holily, and comfortably, that well understandeth his catechism, or the creed, Lord's prayer, and ten commandments; and may find daily work and consolation in the use of these.
A sound and well composed catechism studied well and kept in memory, would be a good measure of knowledge, to ordinary christians, and make them solid and orderly in their understanding, and in their proceeding to the smaller points, and would prevent a great deal of error and miscarriage, that many by ill teaching are cast upon, to their own and the churches' grief! Yea, it were to be wished, that some teachers of late had learnt so much and orderly themselves.
_Direct._ IV. Begin not too early with controversies in religion: and when you come to them, let them have but their due proportion of your time and zeal: but live daily upon these certain great substantials, which all christians are agreed in.
1. Plunge not yourselves too soon into controversies: For, (1.) It will be exceedingly to your loss, by diverting your souls from greater and more necessary things: you may get more increase of holiness, and spend your time more pleasingly to God, by drinking in deeper the substantials of religion, and improving them on your hearts and lives.
(2.) It will corrupt your minds, and instead of humility, charity, holiness, and heavenly-mindedness, it will feed your pride, and kindle faction and a dividing zeal, and quench your charity, and possess you with a wrangling, contentious spirit, and you will make a religion of these sins and lamentable distempers.
(3.) And it is the way to deceive and corrupt your judgments, and make you erroneous or heretical, to your own perdition and the disturbance of the church: for it is two to one, but either you presently err, or else get such an itch after notions and opinions that will lead you to error at the last. Because you are not yet ripe and able to judge of those things, till your minds are prepared by those truths that are first in order to be received. When you undertake a work that you cannot do, no wonder if it be ill done, and must be all undone again, or worse.