John 12:50
"And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak."
Cross References (ranked by relevance)
And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.
Then Simon Peter answered him, Lord, to whom shall we go? thou hast the words of eternal life.
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
Howbeit for this cause I obtained mercy, that in me first Jesus Christ might shew forth all longsuffering, for a pattern to them which should hereafter believe on him to life everlasting.
But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.