Matthew 26:38 (KJV)

Peter answered and said unto him, Though all men shall be offended because of thee, yet will I never be offended.

Jesus said unto him, Verily I say unto thee, That this night, before the cock crow, thou shalt deny me thrice.

Peter said unto him, Though I should die with thee, yet will I not deny thee. Likewise also said all the disciples.

Then cometh Jesus with them unto a place called Gethsemane, and saith unto the disciples, Sit ye here, while I go and pray yonder.

And he took with him Peter and the two sons of Zebedee, and began to be sorrowful and very heavy.

And he went a little farther, 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.

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

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

He 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.

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