Although He was a Son, He learned obedience from what He suffered.
8. Yet learned he obedience, etc. The proximate end of Christ’s sufferings was thus to habituate himself to obedience; not that he was driven to this by force, or that he had need of being thus exercised, as the case is with oxen or horses when their ferocity is to be tamed, for he was abundantly willing to render to his Father the obedience which he owed.
We have here an account of the nature of the priestly office in general, though with an accommodation to the Lord Jesus Christ. We are told, I. Of what kind of beings the high priest must be. He must be taken from among men; he must be a man, one of ourselves, bone of our bones, flesh of our flesh, and spirit of our spirits...
Commenting on Hebrews 5:1-9
Though he were a Son,.... The Son of God, as the Vulgate Latin version reads; not by creation, nor by adoption, nor by office, but by nature, being the only begotten of the Father, having the same nature and perfections with him: yet learned he obedience; not to his parents, or civil magistrates, though that is true; nor merely to the precepts of the law...