It is not to angels that he has subjected the world to come, about which we are speaking. But there is a place where someone has testified:
“What is mankind that you are mindful of them,
a son of man that you care for him?
You made them a little lower than the angels;
you crowned them with glory and honor
and put everything under their feet.”
In putting everything under them, God left nothing that is not subject to them. Yet at present we do not see everything subject to them. But we do see Jesus, who was made lower than the angels for a little while, now crowned with glory and honor because he suffered death, so that by the grace of God he might taste death for everyone.
In bringing many sons and daughters to glory, it was fitting that God, for whom and through whom everything exists, should make the pioneer of their salvation perfect through what he suffered. Both the one who makes people holy and those who are made holy are of the same family. So Jesus is not ashamed to call them brothers and sisters.