Cross reference
Mark 14:39
39 And again having gone away, he prayed, the same word saying;
Matthew 6:7
7 `And -- praying -- ye may not use vain repetitions like the nations, for they think that in their much speaking they shall be heard,
Matthew 26:42-44
42 Again, a second time, having gone away, he prayed, saying, `My Father, if this cup cannot pass away from me except I drink it, Thy will be done;'
43 and having come, he findeth them again sleeping, for their eyes were heavy.
44 And having left them, having gone away again, he prayed a third time, saying the same word;
Luke 18:1
1 And he spake also a simile to them, that it behoveth `us' always to pray, and not to faint,
2 Corinthians 12:8
8 Concerning this thing thrice the Lord did I call upon, that it might depart from me,