Epistle of Eusebius to Carpianus (General record)

Eusebius to Carpianus, my beloved brother in joy and peace, from the land of Ammonius of Alexandria, who with great labor and diligence made and bequeathed to us a word like the harmony of the four Gospels, and from that the headings of the sections. And concerning this, the beginning of the canons is placed so that corruption may not occur; the three are placed in the canon of the reading, and these are not omitted. They are saved from error in the reading, the complete body and the distinctions are made, and each Gospel is known by its place of sign. And only by the one who told us his name, I found a reason that resembles this order, and I selected ten numbers and made for you, and I named the first one and took the first 1 in the unity of the harmony of their four words: Matthew, Mark, Luke, and John. In the second, 3: Matthew, Mark, and Luke; in the third, 3: Matthew, Luke, and John; in the fourth, 3: Matthew, Mark, and John; in the fifth, 2: Matthew and Luke; in the sixth, 2: Matthew and Mark; in the seventh, 2: Matthew and John; in the eighth, 2: Luke and Mark; in the ninth, 2: Luke and John; in the tenth, of its own, as he wrote.

and this arrangement which he arranged and set forth, each Gospel according to the number of sections, and it proceeds from the first, second, and third up to the completion of his book, and each section has a canon number that indicates where it is found in the canon of the harmony. And just as one is known to be in the first, and as two is in the second, and so on until the ten arrangements are completed. And according to what you requested from the four Gospels, and you wished to know which are those that have the same word that you seek in their sections, and you will find that as they say, I have informed you of the number of the section that is in the canon, seek in the canon and you will find those that say this word is written in the canon of the section number. And for those who say to you, this is the word that you seek, you will find in it as in its table the sections of each Gospel that are of them. And this is the same word as the same word of the four Gospels, and of the three, and of the two, and of the one, as he said. And I wrote in the first canon, as the same of the four in the table of the canon of the number of sections of each, and likewise in it.

the Gospel, the number of sections, each one, and by which they may know, among the four of them, the agreement in the canons, each one, and one of three, and one of two, and one of one, and as they find, while reading, a section that is in the canon, and they wish to know the names of those that agree, they look in the table and find, because in it are written their names, and I wrote again in the Gospel the indication of the section that is in the canon, where the miracle of our Lord Jesus Christ was done, and where he commanded, and where he taught, and where he was, and the indication where they took the sign of the cross.