John 6:28-32

Then said they unto him, What shall we do, that we might work the works of God?

Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.

They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?

Our fathers did eat manna in the desert; as it is written, He gave them bread from heaven to eat.

Then Jesus said unto them, Verily, verily, I say unto you, Moses gave you not that bread from heaven; but my Father giveth you the true bread from heaven.