Matthew 26:44
And he left them, and went away again, and prayed the third time, saying the same words.
2 Corinthians 12:8
For this thing I besought the Lord thrice, that it might depart from me.
Daniel 9:17-19
Now therefore, O our God, hear the prayer of thy servant, and his supplications, and cause thy face to shine upon thy sanctuary that is desolate, for the Lord's sake.
Matthew 6:7
But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.
Luke 18:1
And he spoke a parable to them to this end, that men ought always to pray, and not to faint;