'Keep My Saying' in the Bible

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

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

Jesus answered, and said unto him, "If a man love me and will keep my sayings, my father also will love him, and we will come unto him, and will dwell with him.