The translator explains his purpose and the limits of translation

The Wisdom of Jesus the Son of Sirach , also called Ecclesiasticus , is recognized as Deuterocanonical Scripture by the Roman Catholic, Greek Orthodox, and Russian Orthodox Churches. The Prologue of the Wisdom of Jesus the Son of Sirach. WHEREAS many and great things have been delivered to us by the law and the prophets, and by the others that have followed in their steps, for which we must give Israel the praise for instruction and wisdom; and since not only the readers need to become skillful themselves, but also those who love learning must be able to profit those who are outside, both by speaking and writing; my grandfather Jesus, having much given himself to the reading of the law, the prophets, and the other books of our fathers, and having gained great familiarity with them, was also drawn on himself to write somewhat pertaining to instruction and wisdom, in order that those who love learning, and are devoted to these things, might make progress much more by living according to the law. You are entreated therefore to read with favor and attention, and to pardon us, if in any parts of what we have labored to interpret, we may seem to fail in some of the phrases. For things originally spoken in Hebrew don’t have the same force in them when they are translated into another language. Not only these, but the law itself, and the prophecies, and the rest of the books, have no small difference, when they are spoken in their original language. For having come into Egypt in the thirty-eighth year of Energetes the king, and having continued there some time, I found a copy giving no small instruction. I thought it therefore most necessary for me to apply some diligence and travail to translate this book, applying indeed much watchfulness and skill in that space of time to bring the book to an end and publish for them also, who in the land of their travels are desiring to learn, preparing their character in advance, so as to live according to the law.