John 13:31-38

31When therefore he was gone out, Jesus saith, Now is the Son of man glorified, and God is glorified in him; 32and God shall glorify him in himself, and straightway shall he glorify him. 33Little children, yet a little while I am with you. Ye shall seek me: and as I said unto the Jews, Whither I go, ye cannot come; so now I say unto you. 34A new commandment I give unto you, that ye love one another; even as I have loved you, that ye also love one another. 35By this shall all men know that ye are my disciples, if ye have love one to another.

36Simon Peter saith unto him, Lord, whither goest thou? Jesus answered, Whither I go, thou canst not follow me now; but thou shalt follow afterwards. 37Peter saith unto him, Lord, why cannot I follow thee even now? I will lay down my life for thee. 38Jesus answereth, Wilt thou lay down thy life for me? Verily, verily, I say unto thee, The cock shall not crow, till thou hast denied me thrice.