Contradiction with Matthew 26:40
Matthew reports that Jesus finds the disciples asleep when he returns, indicating a lack of vigilance, which contrasts with the implication of intentional prayerfulness in Luke 22:45.
Matthew 26:40: Watch and pray, that ye enter not into temptation: the spirit indeed [is] willing, but the flesh [is] weak.
Contradiction with Mark 14:37
Similar to Matthew, Mark describes Jesus finding the disciples sleeping, suggesting unfaithfulness to his request to watch, contrary to the implication of prayer through Luke 22:45.
Mark 14:37: And he cometh, and findeth them sleeping, and saith unto Peter, Simon, sleepest thou? couldest not thou watch one hour?