Hebrews 1:6

This is the way, dear friends, in which we found our salvation, Jesus Christ, the high priest of our offerings, the protector and helper of our weakness. Through him we fix our gaze on the heights of heaven. In him we see mirrored God's pure and transcendent face. Through him the eyes of our hearts have been opened. Through him our foolish and darkened understanding springs up to the light. Through him the Master has willed that we should taste immortal knowledge. For, since "he reflects the glory of God," "he is as much superior to the angels as the name he has obtained is more excellent than theirs." For thus it is written: "He makes his angels winds, and his servants flames of fire." But of his Son this is what the Master said: "You are my son, today I have begotten you. Ask of me, and I will make the nations your heritage, and the ends of the earth your possession." And again he says to him, "Sit at my right hand till I make your enemies your footstool." Who are meant by "enemies"? Those who are wicked and resist his will.

Our Lord Jesus Christ calls His coming in the flesh an exodus [or going out]: as when He saith, "The sower went out to sow." And again, "I went out from the Father, and am come." And in many places one may see this. But Paul calls it an [eisodus or] coming in, saying, "And when again He bringeth in the First-Begotten into the world," meaning by this Bringing in, His taking on Him flesh. Now why has he so used the expression? The things signified [thereby] are manifest, and in what respect it is [thus] said. For Christ indeed calls it a Going out, justly; for we were out from God. For as in royal palaces, prisoners and those who have offended the king, stand without, and he who desires to reconcile them, does not bring them in, but himself going out discourses with them, until having made them meet for the king's presence, he may bring them in, so also Christ hath done. Having gone out to us, that is, having taken flesh, and having discoursed to us of the King's matters, so He brought us in, having purged the sins, and made reconciliation. Therefore he calls it a Going out. But Paul names it a Coming in, from the metaphor of those who come to an inheritance and receive any portion or possession. For the saying, "and when again He bringeth in the First-Begotten into the world," means this, "when he putteth the world into His hand." For when He was made known, then also He obtained possession of the whole thereof, He saith not these things concerning God The Word, but concerning that which is according to the flesh. For if according to John, "He was in the world, and the world was made by Him": how is He "brought in," otherwise than in the flesh? "And," saith he, "Let all the angels of God worship Him." Whereas he is about to say something great and lofty, he prepares it beforehand, and makes it acceptable, in that he represents the Father as "bringing in" the Son. […]

When he introduces his only begotten, that is, when it was pleasing for him to reveal in the flesh his only begotten son to the inhabitants of the universe, he says, "Let all the angels who serve him, worship him," and "you will see the …

54. – Then (v.6) he speaks of Christ's dominion, whereby He is heir of all things. Here he does three things: first, he describes His dominion, particularly over the angels; secondly, the nature of that dominion on the part of the angels (v.7); thirdly, on …

Christ calls His coming in the flesh a going forth, for example when He says: "A sower went out to sow" (Matt. 13:3), and again: "I came forth from the Father" (John 16:28). And rightly so, for we were outside of God, and He, having …

Into the world - Namely, at his incarnation. He saith, Let all the angels of God worship him - So much higher was he, when in his lowest estate, than the highest angel.

And again, when he bringeth the first begotten into the world;.... By "the first begotten" is meant Christ.

And again, when he bringeth in the firstbegotten - This is not a correct translation of the Greek, Ὁταν δε παλιν εισαγαγῃ τον πρωτοτοκον εις την οικουμενην· But when he bringeth again, or the second time, the first-born into the habitable world.

"Worship Him all ye gods" ("gods," that is, exalted beings, as angels), refers to God; but it was universally admitted among the Hebrews that God would dwell, in a peculiar sense, in Messiah (so as to be in the Talmud phrase, "capable of being pointed to with the finger"); and so what was said of God was true of, and to be fulfilled in, Messiah.

And again - Margin, “When he bringeth in again.” The proper construction of this sentence probably is, “But when, moreover, he brings in,” etc. The word “again” refers not to the fact that the Son of God is brought “again” into the world, implying that he had been introduced before; but it refers to the course of the apostle’s argument, or to the declaration which is made about the Messiah in another place. “The name Son is not only given to him as above, but also in another place, or on another occasion when he brings in the first-begotten into the world.” “When he bringeth in.” When he introduces. So far as the “language” here is concerned this might refer to the birth of the Messiah, but it is evident from the whole connection that the writer means to refer to something that is said in the Old Testament. This is plain because the passage occurs among quotations designed to prove a specific point - that the Son of God, the Author of the Christian system, was superior to the angels. A declaration of the writer here, however true and solemn, would not have answered the purpose. A “proof-text” was missing; a text which would be admitted by those to whom he wrote to bear on the point under consideration. The meaning then is, “that on another occasion different from those to which he had referred, God, when speaking of the Messiah, or when introducing him to mankind, had used language showing that he was superior to the angels.” The meaning of the phrase, “when he bringeth in,” therefore, I take to be, when he introduces him to people; when he makes him known to the world - to wit, by the declaration which he proceeds immediately to quote. “The first-begotten.” Christ is called the “first-begotten,” with reference to his resurrection from the dead, in Rev 1:5, and Col 1:18. […]

The writer of Hebrews builds on his assertions that the particular son of God (Jesus) who was the agent of creation, eternal wisdom, and the essence of God, by comparing him to other supernatural sons of God (angels).