Our fathers ate the manna in the wilderness. As it is written, 'He gave them bread out of heaven{Greek and Hebrew use the same word for "heaven", "the heavens", "the sky", and "the air".} to eat.'"

 Here the argument becomes specifically Jewish in its expression and assumptions and allusions. Jesus had just made a great claim. The true work of God was to believe in him. "Very well," said the Jews, "this is in effect a claim to be the Messiah. Prove it." 