John 6

29. Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
30. They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?
31. Our fathers did eat manna in the desert; as it is written, He gave them bread from heaven to eat.
32. 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.
33. For the bread of God is he which cometh down from heaven, and giveth life unto the world.
34. Then said they unto him, Lord, evermore give us this bread.
35. And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst.
36. But I said unto you, That ye also have seen me, and believe not.
37. All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.
38. For I came down from heaven, not to do mine own will, but the will of him that sent me.
39. And this is the Father’s will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day.
40. And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day.
41. The Jews then murmured at him, because he said, I am the bread which came down from heaven.

After seeing and experiencing the feeding of the five thousand those same people asked to see a sign after having their bellies filled. The crowd couldn’t grasp the ideas and truths Jesus was laying before them and as their subject matter still focused on their stomachs, ie their physical needs and they couldn’t understand the spiritual aspects of what He was saying.

Jesus came to give life, in Christ our spiritual hunger and thirst is filled.