Matt 6:2-4

2“So whenever you give alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, so that they may be praised by others. Truly I tell you, they have received their reward.3But when you give alms, do not let your left hand know what your right hand is doing,4so that your alms may be done in secret; and your Father who sees in secret will reward you.