Catena Aurea on Matthew 6:17–18: John Chrysostom

In almsgiving indeed, He did not say simply, ‘Do not your alms before men,’ but added, ‘to be seen of them.’ But in fasting and prayer He added nothing of this sort; because alms cannot be so done as to be altogether hid, fasting and prayer can be so done. The contempt of men’s praise is no small fruit, for thereby we are freed from the heavy slavery of human opinions, and become properly workers of virtue, loving it for itself and not for others. For as we esteem it an affront if we are loved not for ourselves but for others’ sake, so ought we not to follow virtue on the account of these men, nor to obey God for men’s sake but for His own.

Therefore it follows here, “But to thy Father which seeth in secret.”