Just as the living Father sent Me and I live because of the Father, so also the one who feeds on Me will live because of Me.
57. As the living Father hath sent me. Hitherto Christ has explained the manner in which we must become partakers of life. He now comes to speak of the principal cause, for the first source of life is in the Father. But he meets an objection, for it might be thought that he took away from God what belonged to him, when he made himself the cause of life.
Whether this conference was with the Capernaites, in whose synagogue Christ now was, or with those who came from the other side of the sea, is not certain nor material; however, it is an instance of Christ's condescension that he gave them leave to ask him questions, and did not resent the interruption as an affront, no, not from his common hearers, though not his immediate followers.
Commenting on John 6:28-59
These things said he in the synagogue,.... Openly and publicly, in the place of divine worship, where the Jews resorted for that purpose: as he taught in Capernaum; his own city, and where there was a synagogue, into which he often went and taught his doctrines, and wrought miracles; see Mat 3:13.