Context: The psalmist declares that God desires obedience over sacrifice: "Sacrifice and offering you have not desired, but you have given me an open ear. Burnt offering and sin offering you have not required. Then I said, 'Behold, I have come; in the scroll of the book it is written of me: I delight to do your will, O my God.'" Hebrews 10:5-9 places these words in Christ's mouth "when he comes into the world," interpreting the incarnation itself as God's answer to the inadequacy of Aaronic sacrifices.
Hebrew Key Terms:
Connections:
Christological Connection: Hebrews 10:5-9 transforms this psalm into Christ's incarnational mission statement. When the eternal Son enters the world, He declares: "Sacrifices and offerings you have not desired, but a body have you prepared for me... Behold, I have come to do your will, O God." This establishes that God's ultimate purpose always transcended Aaron's sacrificial system—those offerings were never His final desire but temporary provisions pointing to Christ's perfect obedience. The interpretive key is Hebrews' use of the LXX reading "a body you have prepared" instead of Hebrew's "ears you have opened": Christ's incarnation (receiving a body) was God's answer to the inadequacy of animal sacrifices. What Aaron offered externally with bulls and goats, Christ offered internally through perfect obedience unto death. The author concludes: "By that will we have been sanctified through the offering of the body of Jesus Christ once for all" (Hebrews 10:10). Aaron's entire sacrificial system is "taken away" so that Christ's single self-offering might "establish" the new covenant (Hebrews 10:9). This text doesn't diminish Aaron's priesthood as illegitimate but reveals it as preparatory—God always intended the obedient Incarnate Son, not perpetual animal sacrifice.
Connection Method(s): Promise-Fulfillment + Contrast — The psalmist's declaration that God desires obedience over sacrifice is placed in Christ's mouth at incarnation (Heb 10:5-9), establishing that God's purpose always transcended Aaron's sacrificial system—what Aaron offered externally with animals, Christ offered internally through perfect obedience unto death.
Trajectory Table: 001 - Aaron (The Great High Priest)