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.