"To ascertain the true time of Christ's birth, there are two principal data afforded by the Evangelists: I. It is clear, from Matt. ii: 1, etc., that Christ was born before the death of Herod the Great, who died about Easter, in the year of Rome 749 or 750. Now, if Christ was born in the December next before Herod's death, it must have been in the year of Rome 748 or 749; and, of course, four, if not five years anterior to the Dionysian or Vulgar era: II. It is probable, from Luke iii: 1, 2, 23, that Jesus was 'about' thirty years of age in the fifteenth year of the reign of Tiberius Caesar. Now, the reign of Tiberius may be considered as commencing at the time he became sole emperor, in August of the year of Rome 767; or (as there is some reason to suppose that Augustus made him partner in the government two years before he died), we may begin his reign in the year of Rome 765. The fifteenth year of Tiberius will therefore be either the year of Rome 781 or 779. From which deduct 30, and we have the year of Rome 751 or 749 for the year of Christ's birth; the former two and the latter four years earlier than the Dionysian computation. Comparing these results with those obtained from the death of Herod, it is generally supposed the true time of Christ's birth was the year of Rome 749, or four years before the Vulgar era. {16} _But the conclusion is not certain, because there is uncertainty in the data_. (1.) It is not certain that we ought to reckon Tiberius' reign as beginning two years before the death of Augustus. (2.) Luke says '_about_ thirty years of age.' This is indefinite and may be understood of twenty-nine, thirty, or thirty-one years. (3.) It is not certain in which of the two years mentioned Herod died; nor how long before that event the Savior was born. Respecting the month and day of Christ's birth, we are left almost wholly to conjecture." It will be demanded on what authority I have gone counter to the conclusions of the learned on this subject by keeping to the Dionysian date,--so far, at least, as the year is concerned. My answer is that in the revelation on Church government in the Doctrine and Covenants (sec. xx), the following in respect to the rise of the Church is given: "The rise of the Church of Christ in these last days, _being one thousand eight hundred and thirty years since the coming of our Lord and Savior Jesus Christ in the flesh_, it being regularly organized and established agreeable to the laws of our country, by the will and commandments of God, in the fourth month, and on the sixth day of the month, which is called April."