John 12:48-52

He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day.

For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak.

And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak.