The Lord God hath opened mine ear - This is another expression denoting that he was attentive to the import of the divine commission (see Psalm 40:6).

And I was not rebellious - I willingly undertook the task of communicating the divine will to mankind. The statement here is in accordance with all that is said of the Messiah, that he was willing to come and do the will of God, and that whatever trials the work involved he was prepared to meet them (see Psalm 40:6-8; compare Hebrews 10:4-10).

Neither turned away back "Neither did I withdraw myself backward" - Eleven MSS. and the oldest edition prefix the conjunction ו vau; and so also the Septuagint and Syriac.

The Lord God hath opened mine ear,.... To hear most freely, and receive most fully, what is said by him, and to observe and do it: the allusion seems to be to the servant that had his ears bored, being willing to serve his master for ever, Exodus 21:5 which phrase of boring or opening the ear is used of Christ, Psalm 40:6. It is expressive of his voluntary obedience, as Mediator, to his divine Father, engaging in, and performing with the greatest readiness and cheerfulness, the great work of man's redemption and salvation.

And I was not rebellious; not to his earthly parents, to whom he was subject; nor to civil magistrates, to whom he paid tribute; nor to God, he always did the things that pleased him: he was obedient to the precepts of the moral law, and to the penalty of it, death itself, and readily submitted to the will of God in suffering for his people; which obedience of his was entirely free and voluntary, full, complete, and perfect, done in the room and stead of his people; is the measure of their righteousness, and by which they become righteous; is well pleasing to God, and infinitely preferable to the obedience of men and angels:

neither turned away back; he did not decline the work proposed to him, but readily engaged in it; he never stopped in it, or desisted from it, until he had finished it; he did not hesitate about it, as Moses and Jeremy; or flee from it, as Jonah.

His calling is to save, not to destroy; and for this calling he has Jehovah as a teacher, and to Him he has submitted himself in docile susceptibility and immoveable obedience. Isaiah 50:5 "The Lord Jehovah hath opened mine ear; and I, I was not rebellious, and did not turn back." He put him into a position inwardly to discern His will, that he might become the mediator of divine revelation; and he did not set himself against this calling (mârâh, according to its radical meaning stringere, to make one's self rigid against any one, ἀντιτείνειν), and did not draw back from obeying the call, which, as he well knew, would not bring him earthly honour and gain, but rather shame and ill-treatment. Ever since he had taken the path of his calling, he had not drawn timidly back from the sufferings with which it was connected, but had rather cheerfully taken them upon him. V.6 "I offered my back to smiters, and my cheeks to them that pluck off the hair; I hid not my face from shame and spitting." He offered his back to such as smote it, his cheeks to such as plucked out the hair of his beard (mârat as in Nehemiah 13:25). He did not hide his face, to cover it up from actual insults, or from being spit upon (on kelimmōth with rōq, smiting on the cheek, κολαφίζειν, strokes with rods, ῥαπίζειν, blows upon the head, τύπτειν εἰς τὴν κεφαλήν with ἐμπτύειν, compare Matthew 26:67; Matthew 27:30; John 18:22). The way of his calling leads through a shameful condition of humiliation. What was typified in Job (see Isaiah 30:10; Isaiah 17:6), and prefigured typically and prophetically in the Psalms of David (see Psalm 22:7; Psalm 69:8), finds in him its perfect antitypical fulfilment.

The Lord GOD hath opened mine ear, and I was not rebellious, neither turned away back.

5. opened . ear-(See on [836]Isa 42:20; Isa 48:8); that is, hath made me obediently attentive (but Maurer, "hath informed me of my duty"), as a servant to his master (compare Ps 40:6-8, with Php 2:7; Isa 42:1; 49:3, 6; 52:13; 53:11; Mt 20:28; Lu 22:27).

not rebellious-but, on the contrary, most willing to do the Father's will in proclaiming and procuring salvation for man, at the cost of His own sufferings (Heb 10:5-10).

50:4-9 As Jesus was God and man in one person, we find him sometimes speaking, or spoken of, as the Lord God; at other times, as man and the servant of Jehovah. He was to declare the truths which comfort the broken, contrite heart, those weary of sin, harassed with afflictions. And as the Holy Spirit was upon him, that he might speak as never man spake; so the same Divine influence daily wakened him to pray, to preach the gospel, and to receive and deliver the whole will of the Father. The Father justified the Son when he accepted the satisfaction he made for the sin of man. Christ speaks in the name of all believers. Who dares to be an enemy to those unto whom he is a Friend? or who will contend with those whom he is an Advocate? Thus St. Paul applies it, Ro 8:33.