Matthew 6:1, 3-4, 6-8

Take heed that ye do not your righteousness before men, to be seen of them: else ye have no reward with your Father who is in heaven.

But when thou doest alms, let not thy left hand know what thy right hand doeth: that thine alms may be in secret: and thy Father who seeth in secret shall recompense thee.

But thou, when thou prayest, enter into thine inner chamber, and having shut thy door, pray to thy Father who is in secret, and thy Father who seeth in secret shall recompense thee. And in praying use not vain repetitions, as the Gentiles do: for they think that they shall be heard for their much speaking. Be not therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him.