They make use of the golden number and epact constantly in all their ecclesiastic computations: the first they call Matqué, the other Abacté. Scaliger, who has taken great pains upon this confused subject, the computation of time in the church of Abyssinia, without having succeeded in making it much clearer, tells us, that the first use or invention of epacts was not earlier than the time of Dioclesian; but this is contrary to the positive evidence of Abyssinian history, which says expressly, that the epact was invented by Demetrius[111], patriarch of Alexandria. “Unless, says the poet in their liturgy, Demetrius had made this revelation by the immediate influence of the Holy Ghost, how, I pray you, was it possible that the computation of time, called Epacts, could ever have been known?” And, again, “When you meet, says he, you shall learn the computation by epacts, which was taught by the Holy Ghost to father Demetrius, and by him revealed to you.” Now Demetrius was the twelfth patriarch of Alexandria, who was elected about the 190th year of Christ, or in the reign of the emperor Severus, consequently long before the time of Dioclesian. It seems the reputation the Egyptians had from very old time for their skill in computation and the division of time, remained with them late in the days of Christianity. Pope Leo the Great, writing to the emperor Marcian, confesses that the fixing the time of the moveable feasts was always an exclusive privilege of the church of Alexandria; and therefore, says he, in his letter about reforming the kalendar, the holy fathers endeavoured to take away the occasion of this error, by delegating the whole care of this to the bishop of Alexandria, because the Egyptians, from old times, seem to have had this gift of computation given them; and when these had signified to the apostolic See the days upon which the moveable feasts were to happen, the church of Rome then notified this by writing to churches at a greater distance. We are not to doubt that this privilege, which the church of Alexandria had been so long in possession of, contributed much to inflame the minds of the Abyssinians against the Roman Catholic priests, for altering the time of keeping Easter, by appointing days of their own; for we see violent commotions to have arisen every year upon the celebration of this festival. The Abyssinians have another way of describing time peculiar to themselves; they read the whole of the four evangelists every year in their churches. They begin with Matthew, then proceed to Mark, Luke, and John, in order; and, when they speak of an event, they write and say it happened in the days of Matthew, that is, in the first quarter of the year, while the gospel of St Matthew was yet reading in the churches.