Word, &c. That is, from the twentieth year of king Artaxerxes, when, by his commandment, Nehemias rebuilt the walls of Jerusalem, 2 Esdras ii. From which time, according to the best chronology, there were just sixty-nine weeks of years, that is 483 years, to the baptism of Christ, when he first began to preach and execute the office of Messias. (Challoner)

The prophecy is divided into three periods: the first of forty-nine years, during which the walls were completed; (they had been raised in fifty-two days, (2 Esdras vi. 15.) but many other fortifications were still requisite) the second of four hundred and thirty-four years, at the end of which Christ was baptized, in the fifteenth of Tiberius, the third of three years and a half, during which Christ preached. In the middle of this last week, the ancient sacrifices became useless, (Calmet) as the true Lamb of God had been immolated. (Theod.)

A week of years denotes seven years, as Leviticus xxv. and thus seventy of these weeks would make four hundred and ninety years. (Ven. Bede, Rat. temp. 6 &c.; Worthington)

Origen would understand 4900 years, and dates from the fall of Adam to the ruin of the temple. Marsham begins twenty-one years after the captivity commenced, when Darius took Susa, and ends in the second of Judas, when the temple was purified. This system would destroy the prediction of Christ’s coming, and is very uncertain. Hardouin modifies it, and acknowledges that Christ was the end of the prophecy, though it was fulfilled in figure by the death of Onias III. See 1 Machabees i. 19; Senens. Bib. viii. hær. 12; and Estius. From chap. vii. to xii., the changes in the East, till the time of Epiphanes, are variously described. After the angel had here addressed Daniel, the latter was still perplexed; (Chap. x. 1.) and in order to remove his doubts, the angel informs him of the persecution of Epiphanes, as if he had been speaking of the same event. We may, therefore, count forty-nine years from the taking of Jerusalem (when Jeremias spoke, chap. v. 19.) to Cyrus, the anointed, (Isaias xlv. 1.) who was appointed to free God’s people. They should still be under the Persians, &c., for other four hundred and thirty-four years, and then Onias should be slain. Many would join the Machabees; the sacrifices should cease in the middle of the seventieth week, and the desolation shall continue to the end of it. Yet, though this system may seem plausible, it is better to stick to the common one, which naturally leads us to the death of Christ, dating from the tenth year of Artaxerxes. (Calmet)

He had reigned ten years already with his father. (Petau.)

All the East was persuaded that a great king should arise about the time; when our Saviour actually appeared, and fulfilled all that had been spoken of the Messias. (Calmet, Diss.)

Ferguson says, “We have an astronomical demonstration of the truth of this ancient prophecy, seeing that the prophetic year of the Messias being cut off was the very same with the astronomical.” In a dispute between a Jew and a Christian, at Venice, the Rabbi who presided....put an end to the business by saying, “Let us shut up our Bibles; for if we proceed in the examination of this prophecy, it will make us all become Christians.” (Watson, let. 6.)

Hence probably the Jews denounce a curse on those who calculate the times, (Haydock) and they have purposely curtailed their chronology. (Calmet)

Times, &c. (angustia temporum) which may allude both to the difficulties and opposition they met with in building, and to the shortness of the time in which they finished the wall, viz. fifty-two days. (Challoner)