Then He adds, “Here I am, I have come to do Your will.” He takes away the first to establish the second.
9. He taketh away, etc. See now why and for what purpose this passage was quoted, even that we may know that the full and perfect righteousness under the kingdom of Christ stands in no need of the sacrifices of the Law; for when they are removed, the will of God is set up as a perfect rule.
Here the apostle raises up and exalts the Lord Jesus Christ, as high as he had laid the Levitical priesthood low. He recommends Christ to them as the true high priest, the true atoning sacrifice, the antitype of all the rest: and this he illustrates, I. From the purpose and promise of God concerning Christ, which are frequently recorded in the volume of the book of God, Heb 10:7.
Commenting on Hebrews 10:7-18
Then said he, lo, I come to do thy will, O God,.... See Gill on Heb 10:7. he taketh away the first, that he may establish the second; the sense is, either that God has taken away, and abolished the law, that he might establish the Gospel; or he has caused the first covenant to vanish away, that place might be found for the second...