John 8:51-55

51Verily, verily, I say unto you, If a man keep my word, he shall never see death.

52The Jews said unto him, Now we know that thou hast a devil. Abraham is dead, and the prophets; and thou sayest, If a man keep my word, he shall never taste of death.

53Art thou greater than our father Abraham, which is dead? and the prophets are dead: whom makest thou thyself?

54Jesus answered, If I glorify myself, my glory is nothing: it is my Father that glorifieth me; of whom ye say, that he is your God;

55and ye have not known him: but I know him; and if I should say, I know him not, I shall be like unto you, a liar: but I know him, and keep his word.