Pseudo-Chrysostom
Catena Aurea · Matthäusevangelium 6
Mt 6, 1English original
Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in Heaven.
For when any thing truly glorious is done, there ostentation has its readiest occasion; so the Lord first shuts out all intention of seeking glory; as He knows that this is of all fleshly vices the most dangerous to man. The servants of the Devil are tormented by all kinds of vices; but it is the desire of empty glory that torments the servants of the Lord more than the servants of the Devil.