'Keep My Saying' in the Bible

"Verily, verily I say unto you, if a man keep my sayings, he shall never see death."

Then said the Jews to him, "Now know we that thou hast the devil. Abraham is dead, and also the prophets, and yet 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.