NET
7 “Then I said, ‘Here I am: I have come—it is written of me in the scroll of the book—to do your will, O God.’”
Darby
7 Then I said, Lo, I come (in [the] roll of the book it is written of me) to do, O God, thy will.
KJV
7 Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.