Moreover when you fast, be not, as the hypocrites, of a sad countenance: for they disfigure their faces, that they may appear unto men to fast. Verily I say unto you, They have their reward.
All Commentaries on Matthew 6:16 Go To Matthew 6
Gregory The Dialogist
AD 604
Mor., viii, 44: For by the pale countenance, the trembling limbs, and the bursting sighs, and by all so great toil and trouble, nothing is in the mind but the esteem of men.