Matthew 6:6-8

6But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father who is in secret; and thy Father who seeth in secret shall reward thee openly. 7But when ye pray, use not vain repetitions, as the heathen do : for they think that they shall be heard for their much speaking. 8Therefore, be ye not like them: for your Father knoweth what things ye need, before ye ask him.