Matthew 6:7
But when you pray, do not use vain repetitions, as the heathen do: for they think that they will be heard for their many words.
Matthew 23:13
But alas for you, scribes and Pharisees, hypocrites! for you eat up the houses of widows, and for a pretext make long prayers. For this reason, you shall receive the greater condemnation.
Luke 13:25-28
When once the master of the house has risen, and closed the door, and you begin to stand without, and to knock at the door, saying, Lord, Lord, open for us, and he shall answer and say to you, I know you not, whence you are;
1 Timothy 2:8
I will, therefore, that the men pray everywhere, lifting up holy hands without wrath and disputation.