John 6:25-30

²⁵And having found him the other side of the sea, they said to him, Rabbi, when art thou arrived here?

²⁶Jesus answered them and said, Verily, verily, I say to you, Ye seek me not because ye have seen signs, but because ye have eaten of the loaves and been filled.

²⁷Work not for the food which perishes, but for the food which abides unto life eternal, which the Son of man shall give to you; for him has the Father sealed, even God.

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

²⁹Jesus answered and said to them, This is the work of God, that ye believe on him whom he has sent.

³⁰They said therefore to him, What sign then doest thou that we may see and believe thee? what dost thou work?