(17) The arrangement into three triads of fourteen generations each was obviously in the nature of a memoria technica. The periods embraced by the three groups were, it may be noted, of very unequal length; and the actual omission of names in one of them, makes it possible that the others may have been treated in the same way.

(1) From the birth of Abraham to the birth of David, taking the dates supplied by the received chronology of the Old Testament. B.C. 1996-1085.

(2) From the birth of David to the Captivity. B.C. 1085-588.

(3) From the Captivity to the birth of Jesus. B.C. 588-4.

There remains the further question, how we are to reconcile the genealogy given by St. Matthew with that given by St. Luke (Luke 3:23-38). This will, it is believed, be best dealt with in a short Excursus in the Notes on that Gospel. Here it may be sufficient to note that the difference between the two is, at least, strong presumptive evidence that neither of the two Evangelists had seen the record of the other. It is otherwise hardly conceivable that the element of difficulty which these differences involve should have been introduced by one or the other without a word of explanation. Each, it may be presumed, copied a document which he found, and the two documents were drawn up on a different plan as to the ideas of succession recognised in each of them.

Verse 17. - Fourteen generations. To make the list more easy to remember, the names were so ordered that there should be the same number in each of the three divisions. Thus a means was afforded of checking the correctness of the enumeration, and the list became a sort of memoria technica. Unto Christ; better here, unto the Christ. For now begins the history which tells of this Jesus as the specially Anointed One of God, the true Messiah, of which all the previously anointed messengers had been but types and figures. The history which St. Matthew is about to give demonstrates that in Jesus were fulfilled the prophecies of the Old Testament which the Jews had constantly referred to the Messiah, for whose appearance the pious in Israel were ever looking.

1:1-17 Concerning this genealogy of our Saviour, observe the chief intention. It is not a needless genealogy. It is not a vain-glorious one, as those of great men often are. It proves that our Lord Jesus is of the nation and family out of which the Messiah was to arise. The promise of the blessing was made to Abraham and his seed; of the dominion, to David and his seed. It was promised to Abraham that Christ should descend from him, Ge 12:3; 22:18; and to David that he should descend from him, 2Sa 7:12; Ps 89:3, &c.; 132:11; and, therefore, unless Jesus is a son of David, and a son of Abraham, he is not the Messiah. Now this is here proved from well-known records. When the Son of God was pleased to take our nature, he came near to us, in our fallen, wretched condition; but he was perfectly free from sin: and while we read the names in his genealogy, we should not forget how low the Lord of glory stooped to save the human race.So all the generations from Abraham,.... The Evangelist having traced the genealogy of Christ from Abraham, which he divides into "three" parts, because of the threefold state of the Jews, "first" under Patriarchs, Prophets, and Judges, "next" under Kings, and "then" under Princes and Priests, gives the sum of each part under its distinct head; "so all the generations", that is, the degrees of generation, or the persons generated from Abraham to David, both being included, "are fourteen generations"; as there were, and no more, and are as follow, Abraham, Isaac, Jacob, Judah, Phares, Esrom, Aram, Amminadab, Naasson, Salmon, Boaz, Obed, Jesse, David.

And from David until the carrying away into Babylon are fourteen generations. Here David who closed the first division must be excluded this, and it must be observed, that the Evangelist does not say as before, that "all" the generations from David to the captivity were fourteen, for there were seventeen, three kings being omitted by him at once; but, the generations he thought fit to mention, in order to reduce them to a like number as before, and which were sufficient for his purpose, were fourteen; and may be reckoned in this order, Solomon, Roboam, Abia, Asa, Josaphat, Joram, Ozias, Joatham, Achaz, Ezekias, Manasses, Amon, Josias, Jechonias, or Jehoiachin.

And from the carrying away into Babylon unto Christ are fourteen generations. This must be understood as before; for there might be more generations in this interval, but these were enough to answer the design of the Evangelist; and which he thought proper to mention, and may be numbered in this manner; Jechonias, or Jehoiachin, Salathiel, Zorobabel, Abiud, Ehakim, Azor, Sadoc, Achim, Eliud, Eleazar, Matthan, Jacob, Joseph, Christ. This way of reckoning by generations was used by other nations as well as the Jews (u), particularly the Grecians; so (w) Pausanias says,

"From Tharypus to Pyrrhus the son of Achilles, , were fifteen generations of men.''

And Herodotus (x) speaking of those who had reigned in Babylon, says, among them were two women, one whose name was Semiramis, who reigned before the other , five generations; many other instances of the like kind might be given.

(u) Vid. Pirke Abot. c. 5. sect. 2.((w) Attica sive l. 1. c. 10. p. 19. (x) Clio. l. 1. c. 184. p. 74.