First Sentence

"The Christianization of the Slavs expanded gradually from the 8th until the 13th century, now and then provoking local pagan revolts (in Bohemia soon after its baptism, which dates from the late 9th century, and among the Poles and Eastern Slavs throughout the 11th century), or creating those whimsical combinations of paganism and Christianity labeled in Church Slavonic vocabulary as "double faith" (dvoevrie)."