Matthew 6:7
"And when praying, do not use needless repetitions as the Gentiles do, for they expect to be listened to because of their multitude of words.
Matthew 23:13
"But alas for you, Scribes and Pharisees, hypocrites, for you lock the door of the Kingdom of the Heavens against men; you yourselves do not enter, nor do you allow those to enter who are seeking to do so.
Luke 13:25-28
As soon as the Master of the house shall have risen and shut the door, and you have begun to stand outside and knock at the door and say, "'Sir, open the door for us' --"'I do not know you,' He answers; 'you are no friends of mine.'
1 Timothy 2:8
So then I would have the men everywhere pray, lifting to God holy hands which are unstained with anger or strife;