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
George Leo Haydock
AD 1849
For him hath God the Father sealed. The sense seems to be, that Christ having wrought so many miracles in his Father's name, the Father himself hath thereby given testimony in his favour, and witnessed, as it were, under his seal, that Jesus is his true Son, whom he sent into the world. (Witham)