Matthew 6:4-6

so that your charitable acts will be done in secret; and your Father who sees [what is done] in secret will reward you. “Also, when you pray, do not be like the hypocrites; for they love to pray [publicly]standing in the synagogues and on the corners of the streets so that they may be seen by men. I assure you and most solemnly say to you, they [already]have their reward in full. But when you pray, go into your most private room, close the door and pray to your Father who is in secret, and your Father who sees [what is done] in secret will reward you.