Augustine of Hippo
Catena Aurea · Johannesevangelium 6
Then said they unto him, What shall we do, that we might work the works of God? Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent. They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work? Our fathers did eat manna in the desert; as it is written, He gave them bread from heaven to eat. Then said Jesus unto them, Verily, verily, I say unto you, Moses gave you not that bread from heaven; but my Father giveth you the true bread from heaven. For the bread of God is he which cometh down from heaven, and giveth life unto the world. Then said they unto him, Lord, evermore give us this bread.
(Tr. xxv. s. 12) Or thus; Our Lord sets Himself above Moses, who did not dare to say that He gave the meat which perisheth not. The multitude therefore remembering what Moses had done, and wishing for some greater miracle, say, as it were, Thou promisest the meat which perisheth not, and doest not works equal to those Moses did. He gave us not barley loaves, but manna from heaven.