Albert Barnes 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. The means of support which God provides. That which, in his view, is necessary for humankind.

Is he, etc. Is the Messiah who has come from heaven.

And gives life, etc. See the notes on John 1:4.