A Strong Covenant With Many: Seeing the Atonement in Daniel 9:24–27

Daniel 9:24–27 is one of the most difficult passages in the entire Bible, but in it we find the good news of a Messiah who makes atonement for sins.
Putting Everything Under His Feet:
Structure and Meaning in Hebrews 2:5–9

Why was Jesus’s incarnation necessary for salvation in the book of Hebrews? And how does Psalm 8 relate to this question?