Real parallelisms are subdivided, again, into doctrinal and historic; doctrinal, where the same truth is inculcated; historic, where the same event or series of events is recorded. The supreme importance of doctrinal parallelisms will appear most fully when we come to look at revelation on the divine side, as constituting a grand system of truth harmonious in all its parts. At present we regard them simply as among the means of ascertaining the sense of a given passage. Presuming that every author means to be self-consistent, it is our custom to place side by side his different statements which relate to the same subject, that they may mutually explain each other. The same reasonable method should be pursued with the writings of Isaiah and Jeremiah in the Old Testament, and of Paul and John in the New. What is obscure is to be interpreted by what is clear; what is briefly hinted, by what is more fully expressed. Different writers, moreover, belonging to the same age, animated by the same spirit, and confessedly governed by the same general rules of faith and practice, mutually explain each other. Thus the prophets Isaiah, Hosea, Joel, Amos, and Micah, who belong to the same century, and in a less degree Jeremiah, Ezekiel, and the other prophets of a later age, shed each a light on the pages of all the rest. The same is true of all the epistolary writers of the New Testament, notwithstanding their marked differences of style, and the different aspects also in which they respectively contemplate Christian doctrine and duty.

Our Saviour says of those who claimed to be, before his advent, the shepherds and leaders of God's spiritual fold: "All that ever came before me are thieves and robbers; but the sheep did not hear them." John 10:8. Yet according to this same evangelist he honored Abraham, Moses, and the prophets, as true leaders and teachers of God's people. Chaps. 8:39, 40, 56; 5:45-47; 12:38-41. We know, then, that the Saviour's words must be restricted to such spiritual thieves and robbers as the scribes and Pharisees of his day, who under the leadership of Satan (chap. 8:41, 44) climbed up some other way into the fold.

The apostle Paul says (Rom. 2:7) that God shall render "to them who by patient continuance in well-doing seek for glory, and honor, and immortality, eternal life." We know at once, without reference to the context, that he does not mean, in opposition to the whole tenor of his epistles, to affirm that men can obtain eternal life by their own well-doing, without respect to "the righteousness of God, which is by faith of Jesus Christ, unto all and upon all them that believe." But if we examine the context, this shows that here the apostle is not speaking of the meritorious ground of justification, but of God's impartial regard to a righteous character in both Jews and Gentiles.

Historical parallelisms hold of necessity a prominent place in the interpretation of both the Old and the New Testament. In the Old Testament we have the two parallel histories of the Hebrew commonwealth, first in the books of Samuel and the Kings, then in the books of Chronicles. In the New, the four gospels are four parallel accounts of our Lord's life and teachings. Then there are several parallelisms of less extent; as, for example, Isaiah's account of Sennacherib's war upon Hezekiah, and Hezekiah's sickness (Isa. chaps. 36-39, compared with 2 Kings 18:13-20:21, and the briefer notice of 2 Chron. chap. 32); the three accounts of Paul's conversion (Acts 9:1-22; 22:1-21; 26:1-20); and other passages which will readily occur to the reader. To the work of comparing and harmonizing these parallel histories biblical students have with reason devoted much labor, since they mutually supplement and illustrate each other in many ways. We understand the books of Samuel and Kings more fully by comparison with the books of Chronicles, and the reverse. Each of the four gospels sheds light on the other three. It is by placing the three accounts of Paul's conversion side by side that we gain the most perfect knowledge of this event. The numerous coincidences between the Acts of the Apostles and the Pauline epistles, give us a fuller idea of the apostle's inward life and outward labors than we could otherwise gain. Without the epistles the biographical notices of the Acts would be very incomplete; without the narrative of the Acts many references in the epistles would remain obscure.

Yet these same historic parallelisms, which are the source of so much light, are the occasion of difficulties also, which require for their adjustment a comprehensive view of the spirit of inspiration. In respect to all essential matters of faith and practice, a divine unity pervades the Holy Scriptures. But this essential unity does not exclude diversity of conception and representation. Though all the "holy men of God spake as they were moved by the Holy Ghost," it pleased the divine Spirit to leave them free to speak each in accordance with his individual peculiarities of thought and language. A page from the writings of the apostle John, taken anywhere at random, can be at once distinguished from a page of Paul or Luke. In relating the same transaction, two inspired writers often select different materials, or handle them in a different way. The narrative of each is truthful, but not exhaustive. It gives a correct view of the thing related, but not all the particulars connected with it. The omission from two or more parallel narratives of concomitant circumstances, or the neglect of exact chronological order, sometimes makes the work of harmonizing them a very difficult matter. We feel confident that each separate narrative is correct, and that, had we all the accompanying circumstances in the true order of time, we could see how they are consistent with each other; but for want of this light the exact mode of reconciliation remains doubtful. Such difficulties are incident to all parallel histories. Had the Holy Spirit seen good, he could have excluded them from the pages of inspiration; but herein he chose to deal with us not as children, but rather as men "of full age, even those who, by reason of use, have their senses exercised to discern both good and evil." It is worthy of special notice, that where two or more evangelists record the same words of our Saviour, they are solicitous only about their substance.

In the three parallel accounts of the storm on the sea of Galilee, the disciples say according to Matthew (8:25): "Lord save us, we perish;" according to Mark (4:38): "Master, carest thou not that we perish?" according to Luke (8:24): "Master, master, we perish." And the Lord answers according to Matthew (v. 26): "Why are ye fearful, O ye of little faith?" according to Mark (v. 40): "Why are ye so fearful? how is it that ye have no faith?" according to Luke (v. 25): "Where is your faith?" On the variations in the words of the disciples Augustine well remarks (and the same remarks hold good of our Lord's answer): "The disciples have one and the same meaning in thus awaking the Lord and desiring salvation. Nor is it necessary to inquire which of these addresses, rather than the others, contains the exact words spoken to him. For whether they uttered one of the three, or other words which no one of the evangelists has mentioned, which yet have the same force in respect to the truth of the thought, what matters it?" Harmony of the Gospels 2.24, quoted by Alford on Matth. 8:25.

On the relation of the books of Chronicles to those of Kings and the difficulties connected with them, see Chap. 20, Nos. 21, 22. On the relation of the four gospels to each other, see Chap. 29, Nos. 4-10. We cannot here go into particulars. It must suffice to indicate the general principle by which the harmonist must be guided.

6. The external acquirements necessary to constitute the well-furnished expositor of God's word—the "scribe which is instructed unto the kingdom of heaven"—have been already briefly noticed. Chap. 33, No. 6. Not only are the Scriptures in their original form locked up in dead languages which the interpreter must thoroughly master, but they are, so to speak, embedded in ancient history, chronology, and archæology.

Illustrations of this point are so numerous that the only difficulty is in the selection. The servitude of the Israelites under the Egyptians, their captivity in Babylon, their deliverance under Cyrus, and their subsequent history till the time of our Lord's advent, connect themselves immediately, as all know, with the general history of the ancient heathen world. But there are many illustrations of a more special character. The difficulty of the position in which our Lord was placed by the ensnaring question of the Pharisees and Herodians respecting the lawfulness of paying tribute to Cæsar, and the divine wisdom of his answer (Matt. 22:15-22: Mark 12:13-17; Luke 20:20-26) cannot be perfectly understood without a knowledge, on the one hand, of the political condition and feeling of the Jews as subjected to the dominion of the Romans, which they thoroughly detested, and of which dominion the tribute money daily reminded them; and, on the other, of the hatred which both Pharisees and Herodians bore towards Christ, and their anxiety to find a pretext for accusing him to the people or before this same Roman government.

To apprehend the force of our Lord's argument from the Pentateuch against the error of the Pharisees: "Have ye not read that which was spoken unto you by God, saying, I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living" (Matt. 22:31, 32), we must understand the form in which the Sadducees denied the doctrine of the resurrection. They denied, namely, the existence of spirits separated from bodies. Acts 23:8. To them, consequently, the death of the body was the annihilation of the whole man, which made the very idea of a future resurrection an absurdity. Our Saviour showed from the writings of Moses, whose authority they acknowledged, the error of their assumption that the spirit dies with the body. Thus he demolished the ground on which their denial of a future resurrection rested.