Hebrews argues the Son is superior because he has “become as much superior to angels” as the name he has inherited is more excellent. It supports this by quoting Scripture that speaks to the Son in ways not said to angels (Hebrews 1:4–14). Angels are described as servants, while the Son is enthroned.
Hebrews 1:3–4 continues describing God’s Son after Hebrews 1:1–2. The Son is portrayed as visibly expressing God’s glory and truly reflecting God’s own reality, while also sustaining everything by his powerful word. After making purification for sins “by himself,” he takes the honored seat at God’s right hand. These lines sit inside the book’s opening sweep (Hebrews 1:1–4), which moves from “God spoke long ago” to “God has spoken by a Son,” and then stacks claims about the Son’s role and rank.
Hebrews 1:3–4 presents the Son as uniquely tied to God’s own glory and reality, not merely as a messenger. The Son makes God visible (“radiance of his glory”) and truly represents what God is like (“very image of his substance”). These are explicit claims about who the Son is in relation to God.
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with Hebrews 1:4-14, then read the surrounding section so the answer stays connected to the passage's flow.
4having become so much better than the angels, as he has inherited a more excellent name than they have.
5For to which of the angels did he say at any time, "You are my Son, Today have I become your father?" and again, "I will be to him a Father, And he will be to me a Son?"
6When he again brings in the firstborn into the world he says, "Let all the angels of God worship him."
7Of the angels he says, "Who makes his angels winds, And his servants a flame a fire."
8but of the Son he says, "Your throne, God, is forever and ever; The scepter of uprightness is the scepter of your kingdom.
9You have loved righteousness, and hated iniquity; Therefore God, your God, has anointed you With the oil of gladness above your fellows."
10And, "You, Lord, in the beginning, laid the foundation of the earth. The heavens are the works of your hands.
11They will perish, but you continue. They all will grow old like a garment does.
12As a mantle you will roll them up. And they will be changed. But you are the same. Your years will not fail."
13But of which of the angels has he said at any time, "Sit at my right hand, Until I make your enemies the footstool of your feet?"
14Aren`t they all ministering spirits, sent forth to do service for the sake of those who will inherit salvation?