1 John 5:11-15

And the witness is this, that God gave unto us eternal life, and this life is in his Son. He that hath the Son hath the life; he that hath not the Son of God hath not the life. These things have I written unto you, that ye may know that ye have eternal life, even unto you that believe on the name of the Son of God. And this is the boldness which we have toward him, that, if we ask anything according to his will, he heareth us: and if we know that he heareth us whatsoever we ask, we know that we have the petitions which we have asked of him.