The Ostrog Bible, one of the early printed Bibles in a Slavic language, is published.

The Ostrog Bible was the first complete printed edition of the Bible in Church Slavonic, published in Ostrog in the Polish–Lithuanian Commonwealth by the printer Ivan Fyodorov in 1581 with the assistance of Konstantin Ostrogski. It was based on Gennady's Bible and was the primary source for the Moscow Bible published in 1663 under Alexis of Russia.

The Bible is a collection of religious texts that are central to Christianity and Judaism, and esteemed in other Abrahamic religions such as Islam. The Bible is an anthology originally written in Hebrew and Koine Greek. The texts include instructions, stories, poetry, prophecies, and other genres. The collection of materials accepted as part of the Bible by a particular religious tradition or community is called a biblical canon. Believers generally consider it to be a product of divine inspiration, but the way they understand what that means and interpret the text varies.

The Slavic languages, also known as the Slavonic languages, are Indo-European languages spoken primarily by the Slavic peoples and their descendants. They are thought to descend from a proto-language called Proto-Slavic, spoken during the Early Middle Ages, which in turn is thought to have descended from the earlier Proto-Balto-Slavic language, linking the Slavic languages to the Baltic languages in a Balto-Slavic group within the Indo-European family.