Matthew 6:2-4

2When therefore thou doest alms, sound not a trumpet before thee, as the hypocrites do in the synagogues and in the streets, so that they may have glory from men. Verily I say unto you, They have their reward.

3But thou, when thou doest alms, let not thy left hand know what thy right hand does;

4so that thine alms may be in secret, and thy Father who sees in secret will render [it] to thee.