The first half of chapter 10 completes this long and intricate argument (Hebrews 10:1–18). The writer offers a final point of logic, as well as another reference to the Old Testament. The quotation, Psalm 40:6–8, is from the Septuagint, a Greek translation of the Old Testament completed about 200 years before the birth of Christ. The book of Hebrews uses this passage to show that God's intent was for His will to be completed through a "body," specifically in contrast to doing so through sacrifices (BibleRef).