Work equals believing

I look at the question and it seems pretty reasonable to me. But Jesus blew them (and me) away with the answer. They were asking an "old plan" question. The "old plan" has a whole bunch of what must I do stuff.

Jesus gave them some "new plan" answers. This was in fact good news. Here it is. BELIEVE!! That is the new plan. Work equals believing.

Do not work for food that spoils, but for food that endures to eternal life, which the Son of Man will give you. On him God the Father has placed his seal of approval.' Then they asked him, 'What must we do to do the works God requires?' Jesus answered, 'The work of God is this: to believe in the one he has sent.' John 6:27-29