Albert Barnes' Notes on the Whole Bible - Hebrews 1:5
For unto which of the angels ... - The object of this is, to prove that the Son of God, who has spoken to people in these last days, is superior to the angels. As the apostle was writing to those who had been trained in the Jewish religion, and who admitted the authority of the Old Testament, of course he made his appeal to that, and undoubtedly referred for proof to those places which were generally admitted to relate to the Messiah. Abarbanel says, that it was the common opinion of the Jewish... read more
The Pulpit Commentary - Hebrews 1:5
For to which of the angels said he at any time . Observe the form of the question, which has been already noticed. It is not, "When were angels ever called sons?" but to this effect: "To which of them did he ever speak (individually) in the following remarkable terms?" The first quotation is from Psalms 2:7 ; the second from 2 Samuel 7:14 . The second having had undoubtedly a primary reference to Solomon, and the first presumably to some king of Israel, probably to David, we may here... read more