Long ago God spoke to the fathers by the prophets at different times and in different ways.
References for Hebrews 1:1
In these last days, He has spoken to us by [His] Son, whom He has appointed heir of all things and through whom He made the universe.
References for Hebrews 1:2
He is the radiance of His glory, the exact expression of His nature, and He sustains all things by His powerful word. After making purification for sins, He sat down at the right hand of the Majesty on high.
References for Hebrews 1:3
So He became higher in rank than the angels, just as the name He inherited is superior to theirs.