For I came down from heaven, not to do mine own will, but the will of him that sent me.
38. For I came down from heaven. This is a confirmation of the preceding statement, that we do not seek Christ in vain. For faith is a work of God, by which he shows that we are his people, and appoints his Son to be the protector of our salvation. Now the Son has no other design than to fulfill the commands of his Father.
Christ let them question Him freely, no small condescension. The wise teacher listens swiftly and turns even foolish questions toward what profits. These Galileans asking "What shall we do?" show a teachable mind, unlike the Judean critics who came only to cavil. He answers the sincere request, not the impertinent quibble.
AI summary
Commenting on John 6:28-59
And this is the Father's will which hath sent me,.... This explains both who he was that sent him; the Father of him, and of his people; whose sending of him does not suppose any change of place, or inequality between them, or disrespect unto him, or compulsion of him, but agreement between them, and love to the persons on whose account he was sent...