Matthew 25:31-46 is such a Catholic part of Scripture, by which I mean it emphasizes the eschatalogical importance of faith working through love -- faith working through love. We hear it in today's Gospel, and it is the Christological fulfillment of the Scripture we heard from Isaiah 58:1-9 on Friday.
I suggest you read the homily of Fr. Philip Neri Powell, O.P. for today.