Isaiah 50:5

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.