Matthew 6:7
And praying do not use vain repetitions as the heathen do: for they think they shall be heard in their much speaking.
Matthew 23:13
But woe unto you, scribes and Pharisees, hypocrites! because you shut up the kingdom of the heavens against the people: for you do not go in, neither do you permit those coming in to enter.
Luke 13:25-28
When the landlord may rise up, and close the door, and you may begin to stand without, and knock at the door, saying, Lord, open unto us; and responding he will say unto you, I know not whence you are.
1 Timothy 2:8
Therefore I wish that men in every place would all pray, holding up holy hands, without wrath and doubting: