Matthew 26:37-41
37And he took with him Peter and the two sons of Zebedee, and began to be sorrowful and very heavy.
38Then saith he unto them, My soul is exceeding sorrowful, even unto death: tarry ye here, and watch with me.
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.
(KJV)