... to the early Christians of the 4th century who refused to accept the Arian heresy, Christians who had lost their Church buildings to the heretics, but Christians who kept the faith. In the 21st century, we are in a quite similar situation.St. Athanasius was a Doctor of the Church. He lived from 296 to 373 A.D.

“True, the premises are good when the apostolic faith is preached there; they are holy if everything takes place there in a holy way ...
“You are the ones who are happy; you who remain within the Church by your faith, who hold firmly to the foundations of the faith which has come down to you from apostolic tradition, and if an execrable jealously has tried to shake it in a number of occasions, it has not succeeded. They are the ones who have broken away from it in the present crisis.
“No one, ever, will prevail against your faith, beloved brothers, and we believe that God will give us our Churches back some day.
“Thus, the more violently they try to occupy the places of worship, the more they separate themselves from the Church. They claim that they represent the Church but in reality they are the ones who are expelling themselves from it and going astray.
“Even if Catholics faithful to tradition are reduced to a handful, they are the ones who are the true Church of Jesus Christ. (Coll. Selecta SS. Eccl. Patrum. Caillu and Guillou, Vol. 32, pp 411-412).”