Jesus answered them, "Most assuredly I tell you, you seek me, not because you saw signs, but because you ate of the loaves, and were filled.

 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." 