Matthew 26:41 Meaning

39And he went a little further, and fell on his face, and prayed, saying, O my Father, if it be possible, let this cup pass from me: nevertheless not as I will, but as thou wilt.

40And he cometh unto the disciples, and findeth them asleep, and saith unto Peter, What, could ye not watch with me one hour?

41Watch and pray, that ye enter not into temptation: the spirit indeed is willing, but the flesh is weak.

42He went away again the second time, and prayed, saying, O my Father, if this cup may not pass away from me, except I drink it, thy will be done.

43And he came and found them asleep again: for their eyes were heavy.