The judgment scene in Matthew 25 divides everyone by six practical acts — food, drink, welcome to the stranger, clothing, care for the sick, visiting the prisoner — and the striking feature is that neither group recognises what it has done. No creed is recited, no doctrinal test is applied, and the criterion is entirely material. This passage does more work in Christian social action than any other: it is behind the hospital, the hospice, the soup kitchen, and the prison chaplaincy, and it is quoted in nearly every argument the churches have about migration. It also sits in obvious tension with the Pauline strand that salvation comes by grace through faith rather than works. Most of the tradition holds both without resolving them, and the Reformation was in part a fight about which one to lead with.