Then said they unto him, What shall we do, that we might work the works of God?
All Commentaries on John 6:28 Go To John 6
Alcuin of York
AD 804
They understood that the meat, which remains to eternal life, was the work of God: and therefore they ask Him what to do to work the work of God, i.e. obtain the meat: Then said they to Him, What shall we do that we might work the works of God? .
And to exalt the miracle of the manna they quote the Psalm, As it is written, He gave them bread from heaven to eat.
Who by the humanity, which was assumed, came down from heaven, and by the divinity, which assumed it, gives life to the world.