The Holy Bible
The Orthodox Church uses the Holy Bible in all of its services. In addition to reading Old and New Testament scripture in our worship services, the services themselves are almost entirely taken from direct or indirect references to scripture, for their format, prayers, petitions and celebratory patterns.
We use the Septuagint version of the Bible for Old Testament readings, and we read the New Testament in the original Greek language as well as in English. Read more: http://www.goarch.org/ourfaith/ourfaith7068