Hebrews 1:1-2

In giving us his Son, his only Word (for he possesses no other), he spoke everything to us at once in this sole Word — and he has no more to say… because what he spoke before to the prophets in parts, he has now spoken all at once by giving us the All Who is His Son. Any person questioning God or desiring some vision or revelation would be guilty not only of foolish behavior but also of offending him, by not fixing his eyes entirely upon Christ and by living with the desire for some other novelty. (He 1:1-2)