Therefore when you give your alms, do not sound a trumpet before you, 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.
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Chromatius of Aquileia
Earlier Jesus taught that the work of justice is to be done not for the sake of humans but for the sake of God. Now we are also instructed that we should not blow the trumpet when we perform acts of charity. That is, we should not broadcast what we do, because it is not the mark of a devout mind to do any of the works of God in order to anticipate the glory of human praise. Many people, you see, make a donation for the use of the poor in order to reap from the gesture the human praise and the renown of their contemporaries. The Lord shows that they have received the reward of their work in this age. For as long as they seek the glory of this age, they lose the reward of the future promise. .