Nicene and Post-Nicene Fathers: Series II/Volume III/Rufinus/Jerome's Apology/Book II/Chapter 28
35. By all this it is made clear, first that the version of the Seventy translators which has gained an established position by having been so long in use, was profitable to the churches, because that by its means the Gentiles heard of the coming of Christ before he came; secondly, that the other translators are not to be reproved, since it was not their own works that they published but the divine books which they translated; and, thirdly, that my own familiar friend should frankly accept from a Christian and a friend what he has taken great pains to obtain from the Jews and has written down for him at great cost. I have exceeded the bounds of a letter; and, though I had taken pen in hand to contend against a wicked heresy, I have been compelled to make answer on my own behalf, while waiting for my friend’s three books, and in a state of constant mental suspense about the charges he had heaped up against me. It is easier to guard against one who professes hostility than to make head against an enemy who lurks under the guise of a friend.