“Mine ears hast Thou opened…A body hast Thou prepared Me. .” – Psalm 40:6 ; Hebrews 10:5

When the Savior came, His ear was not as ours, but was attentive to the divine voice…As man, He had a divine instinct of holiness, which made Him to know and love the Father’s will, and caused Him always to translate that will into His own life. You see He came with an opened ear, and some think that here we have an allusion to the boring of the ear in the case of the servant who had a right to liberty, but refused to quit his servitude, because he loved his master, and wished to remain with him for ever. It is not certain that there is any such reference; but it is certain that our Lord was bound for ever to the service which He had undertaken for His Father, and that He would not go back from it. He pledged Himself to redeem us, and He set His face like a flint to do it. He loved His Father, and He loved His chosen so much that He vowed to execute the Father’s work, even to what I might call “the bitter end,” if I did not know that it was a sweet and blessed end to Him.

“A body hast Thou prepared Me.” In the fullness of time He came into that body, which was admirably adapted to enshrine the Godhead. Wondrous mystery, that the infant of Bethlehem should be linked with the Infinite; and that the weary man by the shores of Galilee should be very God of very God, revealed in a body prepared for Him! “A body hast Thou prepared Me”: He had a prepared ear and a prepared body…He from old eternity dwelt with God: the Word was in the beginning with God, and the Word was God…There was fashioned by the Holy Ghost, in the womb of the blessed Virgin, a body fitted to embody the Son of God. Wrought mysteriously, by means into which we must not inquire-for what God hath veiled must remain covered-that body was suited to set forth the great mystery, “God manifest in the flesh.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2202.cfm