I think the answer to your question is given in the preceding verse>>>
Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
Verse 4 is actually just a continuation of the same premise.
The implications of the whole idea however, is profound entirely. It's the basis of the belief or understanding of the nature of the son of God being distinct from Him.
Thanks for the reply.
Notice this verse:
Acts 4:
12 Furthermore, there is no salvation in anyone else, for there is no other name under heaven that
has been given among men by which we must get saved.
That name that implies salvation was given only AFTER Jesus' death and resurrection, not before. So, at that moment Jesus had THAT NAME given to him, since his name was given to us as a mean to be saved. After that event is, according to Hb. 1:4, when Jesus became better (in that sense) than angels,
not before, since before that moment Jesus' name didn't have any meaning for men and he was not in any sense, important to us, since we didn't even know who he was.
Pro. 30:4 (...) Who has established all the ends of the earth?
What is his name and the name of his son—if you know?
Now we know why Jesus was not better than angels before his
name became important for our salvation ... it has nothing to do with the fact of Jesus being or being not an angel of God; So, quoting Hb. 1:4 to support that idea is incorrect, because that is not what that verse is saying.
Hb. 1:4 So he has become better than the angels to the extent that he has inherited a name more excellent than theirs.