New Defender's Study Bible Notes
40:8 to do thy will. Just as the servant with the “opened ear,” Christ had come solely to do the will of the One who sent Him. It is significant that in quoting the psalm the author of Hebrews translated “mine ears hast thou opened” by “a body hast thou prepared me” (Hebrews 10:5). Not just the ear, but the whole body was to be made an offering for sins forever (Hebrews 10:10-12).