44 And he left them, and went away again, and prayed the third time, saying the same thing.
Matthew 26:44 Cross References - Anderson
Matthew 6:7
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.
Luke 18:1
1 And he spoke a parable to them, that they ought always to pray, and not to become weary,
2 Corinthians 12:8
8 With regard to this, I three times entreated the Lord that it might leave me;