John 6:52

πρὸς�. One with another (John 4:33; John 16:17): their excitement increases; they have got beyond murmuring about Him (John 5:4), but they are not all equally hostile (John 7:12; John 7:43; John 10:19). “They strove, and that with one another, for they understood not, neither wished to take the Bread of concord” (S. Augustine).

Πῶς. This is the old vain question (John 3:4; John 3:9) which continues to distract the Church and the world. All that men need know is the fact; but they insist in asking as to the manner. ‘Cur’ et ‘Quomodo’ exitiales voculae—‘Why’ and ‘How’ are deadly little words (Luther). Οὗτος is contemptuous (John 6:42): φαγεῖν is their own addition; they wish to bring out in full the strangeness of His declaration.