beowulf wrote:Three holy books.One for each religion: the Septuagint for Christians, the MT for Judaism and the Quran for Muslims; each religion is free to believe the holy writ without having to justify to the other religions and without the risk of causing offence.
This seems to be an over-simplification. For example, from the introduction to The New Oxford Annotated Bible; New Revised Standard Version With The Apocrypha (Fully Revised Fourth Edition), page xvi: "For the Old Testament the Committee has made use of the Biblica Hebraica Stuttgartensia (1977; ed. sec. emendata, 1983. This is the edition of the Hebrew and Aramaic text as current early in the Christian era and fixed by Jewish scholars (the "Masoretes") of the sixth to the ninth centuries."
Three Holy books is about having separate sacred scriptures.
You mentioned "the Septuagint for Christians." The Septuagint is the translation of the Tanakh into Koine Greek. Some Christians use it. Others use, for example, the NRSV derived from the Masoretic text.