The Lord GOD hath given me the tongue of the learned, that I should know how to speak a word in season to him that is weary: he wakeneth morning by morning, he wakeneth mine ear to hear as the learned. The Lord GOD hath opened mine ear, and I was not rebellious, neither turned away back. I gave my back to the smiters, and my cheeks to them that plucked off the hair: I hid not my face from shame and spitting. For the Lord GOD will help me; therefore shall I not be confounded: therefore have I set my face like a flint, and I know that I shall not be ashamed. He is near that justifieth me; who will contend with me? let us stand together: who is mine adversary? let him come near to me. Behold, the Lord GOD will help me; who is he that shall condemn me? lo, they all shall wax old as a garment; the moth shall eat them up.
The Messiah told the nation of Israel that the same way they ignored Jehovah of the “Old Testament”, they would ignore Jesus of the “New Testament”. He came as the True Disciple, taught by God to speak the appropriate word. Every morning, His ear was opened to receive instructions from His Father for that day. He delighted to do the will of God, even if it meant going to the cross. He did not turn back but willingly gave Himself over to suffering and shame. In full confidence that God would vindicate Him, He set His face like a flint to go to Jerusalem. He was vindicated, of course, by His resurrection. Now he challenges the adversary, Satan, to condemn Him. He has the confidence that all His foes will grow old like a moth-eaten garment.