Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah, the Prince, shall be seven weeks, and threescore and two weeks: the street shall be built again, and the wall, even in troublesome times.
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Aquinas Study Bible
AD 2017
The 7 weeks and 62 weeks makes 69 weeks, in turn makes 483 years. This would bring us to the bapism of Jesus by John the Baptist.
Word 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 mak...