Matthew 6:2-4

2Therefore when thou doest thy alms, do not sound a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may have glory from men. Verily I say to you, They have their reward.1 3But when thou doest alms, let not thy left hand know what thy right hand doeth: 4That thy alms may be in secret: and thy Father who seeth in secret himself shall reward thee openly.