Augustine of Hippo — as excerpted in the Catena Aurea on John 6:1-14

“(Tr. xxiv. s. 5) Our Lord’s question proved the ignorance of His disciples, i. e. the people’s ignorance of the Law. They lay on the grass, i. e. were carnally minded, rested in carnal things, for all flesh is grass. (Isa. 40:6) Men are filled with the loaves, when what they hear with the ear, they fulfil in practice.”