Psalms 40:6-9

⁶Sacrifice and offering thou didst not desire; mine ears hast thou opened: burnt offering and sin offering hast thou not required.

⁷Then said I, Lo, I come: in the volume of the book it is written of me,

⁸I delight to do thy will, O my God: yea, thy law is within my heart.

⁹I have preached righteousness in the great congregation: lo, I have not refrained my lips, O LORD, thou knowest.