Matthew 6:1-4

"Pay attention, lest you perform your justice before men, in order to be seen by them; otherwise you shall not have a reward with your Father, who is in heaven. Therefore, when you give alms, do not choose to sound a trumpet before you, as the hypocrites do in the synagogues and in the towns, so that they may be honored by men. Amen I say to you, they have received their reward. But when you give alms, do not let your left hand know what your right hand is doing, so that your almsgiving may be in secret, and your Father, who sees in secret, will repay you.