“Thus the theme is clear. And I am in the moral material, therefore on that day only the sheep shall be on his right hand, when he says, ‘And he shall set,’ etc.  Therefore, on that day it will be better to be a sheep of Jesus Christ than to have been a pope, or king, or emperor.  Now, I see in sacred scripture that a man becomes and is revealed to be a sheep of Jesus Christ from five virtues, even if he had been the devil’s goat before, namely by:
   Simple innocence,
   Ample mercy,
   Steadfast patience,
   True obedience,
   Worthy penance.”
St. Vincent Ferrer, Sermon on the Last Judgment, (Mt 25:33  Sheep and goats)