1651 in Christianity

right|thumb|One of the pages of Abagar, preserved in the SS. Cyril and Methodius National Library in Sofia Abagar ("Абагар") is a breviary by the Bulgarian Roman Catholic Bishop of Nikopol Filip Stanislavov printed in Rome in 1651. It is regarded as the first printed book in modern Bulgarian. The language of the breviary is a specific blend of modern Bulgarian and Church Slavonic with Serbo-Croatian influences, that was used in writing by the Catholics from Chiprovtsi, Bulgaria, in the period. Unlike many other works of the Bulgarian Roman Catholics, it was printed in Cyrillic and not Latin. =