Matthew 25:37
Then the righteous will answer him, saying: Lord, when did we see you hungry and feed you, or thirsty and give you drink? The righteous who did not see: the sheep's response to the King's declaration is genuine surprise — they did not recognize the King in those they served. The when did we see you communicates the unselfconscious character of the mercy they showed: they were not performing acts of mercy in the hope of accumulating merit; they were simply responding to need.