How can this man give us his flesh to eat? - Our Lord removes this difficulty, and answers the question, in John 6:63.

The Jews therefore strove among themselves,.... Fell to cavilling and disputing one among another; some understanding Christ, and others not; some being for him, and vindicated what he said; and others being against him, and who were the majority, objected,

saying how can this man give us his flesh to eat? which is to be understood, not physically, but as morally impossible and unlawful; since, with the Jews, it was not lawful to eat the flesh of any creature alive, and much less the flesh of man; for the Jews understood Christ of a corporeal eating of his flesh, being strangers to a figurative or spiritual eating of it by faith, in which sense he meant it.

Strove (ἐμάχοντο)

The murmuring (John 6:41) now breaks out into open contention among the Jews themselves.

{12} The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?

(12) Flesh cannot make a difference between fleshly eating, which is done by the help of the teeth, and spiritual eating, which consists in faith: and therefore it condemns that which it does not understand: yet nonetheless, the truth must be preached and taught.

6:52 Observe the degrees: the Jews are tried here; the disciples, John 6:60 - 66, the apostles, John 6:67.

52. Jews strove among themselves-arguing the point together.

How can, &c.-that is, Give us His flesh to eat? Absurd.

6:52-59 The flesh and blood of the Son of man, denote the Redeemer in the nature of man; Christ and him crucified, and the redemption wrought out by him, with all the precious benefits of redemption; pardon of sin, acceptance with God, the way to the throne of grace, the promises of the covenant, and eternal life. These are called the flesh and blood of Christ, because they are purchased by the breaking his body, and the shedding of his blood. Also, because they are meat and drink to our souls. Eating this flesh and drinking this blood mean believing in Christ. We partake of Christ and his benefits by faith. The soul that rightly knows its state and wants, finds whatever can calm the conscience, and promote true holiness, in the redeemer, God manifest in the flesh. Meditating upon the cross of Christ gives life to our repentance, love, and gratitude. We live by him, as our bodies live by our food. We live by him, as the members by the head, the branches by the root: because he lives we shall live also.