A.T. Robertson Commentary John 6:33

"For the bread of God is that which cometh down out of heaven, and giveth life unto the world." — John 6:33 (ASV)

The bread of God (ο αρτος του θεου). All bread is of God (Matthew 6:11). The manna came down from heaven (Numbers 11:9) as does this bread (ο καταβαινων). Refers to the bread (ο αρτος, masculine). Bernard notes that this phrase (coming down) is used seven times in this discourse (33,38,41,42,50,51,58).

Giveth life (ζωην διδους). Chrysostom observes that the manna gave nourishment (τροφη), but not life (ζωη). This is a most astounding statement to the crowd.