Albert Barnes' Notes on the Whole Bible - Hebrews 1:6
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... read more
The Pulpit Commentary - Hebrews 1:6
The Son of God the Recipient of the worship of the angels. "And again, when he bringeth in the First-begotten," etc. This verse, as Ebrard remarks, "is unquestionably one of the most difficult in the whole Epistle." We have in it: 1. An august relationship. "His First-begotten." This title is appropriately applied to the Son of God: 2. A remarkable epoch. "And again, when he bringeth in the First-begotten into the world." There is much diversity of opinion as to what event in... read more