Labor not for the food which perishes, but for that food which endures unto everlasting life, which the Son of man shall give unto you: for on him has God the Father set his seal.
All Commentaries on John 6:27 Go To John 6
The Apostolic Constitutions
AD 375
Follow therefore your trades as by the by, for your maintenance, but make the worship of God your main business; as also our Lord said: "Labour not for the meat which perishes, but for that which endureth unto everlasting life."