On the contrary, it reached a kind of apex in the sixteenth and early seventeenth centuries. (religion-online.org)
On the contrary, commitment to Christianity was never more intense than in the sixteenth and early seventeenth centuries. (religion-online.org)
By the time Christianity was totally outlawed in Japan in the early seventeenth century, elements of Gregorian chant had infiltrated Japan's traditional folk music. (firstthings.com)