John 6:28-31

²⁸They said therefore to him, “What must we do, that we may work the works of God?”

²⁹Jesus answered them, “This is the work of God, that you believe in him whom he has sent.”

³⁰They said therefore to him, “What then do you do for a sign, that we may see and believe you? What work do you do?

³¹Our fathers ate the manna in the wilderness. As it is written, ‘He gave them bread out of heaven to eat.’”