Mark 14:32 (KJV)

And Jesus saith unto them, All ye shall be offended because of me this night: for it is written, I will smite the shepherd, and the sheep shall be scattered.

But after that I am risen, I will go before you into Galilee.

But Peter said unto him, Although all shall be offended, yet will not I.

And Jesus saith unto him, Verily I say unto thee, That this day, even in this night, before the cock crow twice, thou shalt deny me thrice.

But he spake the more vehemently, If I should die with thee, I will not deny thee in any wise. Likewise also said they all.

And he taketh with him Peter and James and John, and began to be sore amazed, and to be very heavy;

And saith unto them, My soul is exceeding sorrowful unto death: tarry ye here, and watch.

And he went forward a little, and fell on the ground, and prayed that, if it were possible, the hour might pass from him.

And he said, Abba, Father, all things are possible unto thee; take away this cup from me: nevertheless not what I will, but what thou wilt.

And he cometh, and findeth them sleeping, and saith unto Peter, Simon, sleepest thou? couldest not thou watch one hour?