
Augustine of Hippo
Catena Aurea · Matthäusevangelium 6
Therefore when thou doest thine alms, do not sound a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may have glory of men. Verily I say unto you, They have their reward. But when thou doest alms, let not thy left hand know what thy right hand doeth: That thine alms may be in secret: and thy Father which seeth in secret Himself shall reward thee openly.
(ubi sup.) This refers to what He had said above, Otherwise ye shall have no reward of your Father which is in heaven; and He goes on to shew them that they should not do their alms as the hypocrites, but teaches them how they should do them.