the era of roman empire where christians get killed during arena by feeding them to lions. and burns them in their own homes. or europe bloody mary era where she killed many christians. but dont worry those saint that experience being martrydom is in heaven and are purely in highest state of fulfilment and satisfaction. enjoyment and happiness state of well being.
the saints were the first Christians, the gentiles didn't become called Christian until Antioch. so, this is one hint at the true church of Jesus Christ. everywhere where priesthood authority has been given to the earth, satan and his armies have sought to destroy the church. the Christian church started out with the holy order of the son of God, it is always a priesthood nation, kingdom and government