John 13:33-38

33 Little 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 say I to you.

34 A new commandment I give unto you: that ye love one another, as I have loved you, that ye also love one another.

35 By this shall all men know that ye are My disciples: if ye have love one for another."

36 Simon Peter said unto Him, "Lord, whither goest Thou?" Jesus answered him, "Whither I go thou canst not follow Me now, but thou shalt follow Me afterwards."

37 Peter said unto Him, "Lord, why cannot I follow Thee now? I will lay down my life for Thy sake."

38 Jesus answered him, "Wilt thou lay down thy life for My sake? Verily, verily I say unto thee, the cock shall not crow till thou hast denied Me thrice.