Catena Aurea on Luke 7:29–35: Augustine of Hippo

Now these words have reference to John and Christ. For when he says, We have mourned, and ye have not wept, it is in allusion to John, whose abstinence from meat and drink signified penitential sorrow; and hence he adds in explanation, For John came neither eating bread, nor drinking wine, and ye say he hath a devil.