The Stefanyk Library of the Ukraine Academy of Sciences in Lvov houses the manuscript of a Czech medieval bible under shelf mark 9 O/Н Од. Зб. 3897. This bible was transcribed 1476-1478 by Jan Záblacký, a scribe of whom no details are known, and contains the complete collection of the books of the Old and the New Testaments without prefaces. We know neither the person who ordered the work nor the first owner, unless it was Jan Záblacký himself. Nor can we determine with any accuracy the place where the bible was written, although at the end of the manuscript Záblacký mentions that he completed it on 9th April 1478 in Kamenice, though there are several towns and villages of that name in Bohemia and Moravia. The times recorded by Jan Záblacký for individual books of the bible are of interest and value, as they enable us to reconstruct the rate at which the scribe transcribed the bible text and the average daily amount of text transcribed.