What does Hebrews 1:12 mean?
The first two chapters of Hebrews are mostly dedicated to proving, from the Old Testament, that Jesus is an authority far greater than any angel. This is shown by collecting various quotations from Jewish Scriptures, comparing their depiction of angels to their depiction of the Messiah.Verses 10 through 12 are a quotation from Psalm 102:25–27. In that Psalm, God is praised for being unchanging, faithful, and eternal. This gives the psalmist confidence even when enemies seem to be winning. In Hebrews 1:7, it was pointed out that angels are shifting, changing beings. This means that the Promised One, Jesus Christ the Messiah, cannot be an angel.
Another point made in these verses is that Jesus is a figure of authority and power. Angels, on the other hand, are depicted as servants. The writer of Hebrews wants his readers to understand that the promises, messages, and decrees made in the Old Testament to the Promised One are not the same as the words given to angels. This is part of the writer's intent of proving that God, who once spoke through prophets, is now speaking through Jesus.