Council of Trent
The Council of Trent (1545-1563) was the nineteenth ecumenical council (also known as the general council, or Council of Trent) located at Trent. This Council was set up by the Roman Catholic church in response to the Reformation.
This Council proclaimed the Bible and tradition to be the rule of faith. It also defined doctrine on the Mass, justification, the sacraments, indulgences, purgatory, invocation of saints and veneration of sacred images. This Council also issued decrees on marriage and on reform of the clergy.
The Council also wrote the Index Librorum Prohibitorum (Index of Forbidden Books).