2:6 testified somewhere. Such vagueness in scriptural references is characteristic of the author of Hebrews, who stresses the divine authorship of Scripture rather than the human authors (e.g., 1:5, 7, 8; 2:12; 3:7; 4:3; 5:5, 6). This way of citing a well-known Old Testament proof text about man in creation is evidence for the Jewish background of the recipients.