Matthew 6:7 in the King James Version
But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.
Context
6 But you, when you pray, enter into your inner room, and having shut your door, pray to your Father who is in secret; and your Father who sees in secret will reward you openly.
7 In praying, don’t use vain repetitions as the Gentiles do; for they think that they will be heard for their much speaking.
8 Therefore don’t be like them, for your Father knows what things you need before you ask him.