It is the spirit that gives life; the flesh profits nothing: the words that I speak unto you, they are spirit, and they are life.
All Commentaries on John 6:63 Go To John 6
Tertullian of Carthage
AD 220
Of our heretic. Now, that the very Lord Himself of all might, the Word and Spirit of the Father.
He says, it is true, that "the flesh profiteth nothing; ".
for the kingdom of God; "the flesh profiteth nothing."