25When they found Him on the other side of the sea, they asked Him, “Rabbi, when did you come here?”
26Jesus answered, “Most assuredly, I tell you, you are looking for me, not because you saw the signs, but because you ate the loaves and were filled.
27Don’t labor for perishable food, but for the food which endures to everlasting life, which the Son of Man will give you, because God the Father has set His seal on Him.”
28Then they asked Him, “What must we do to do God’s works?”
29Jesus answered them, “This is God’s work, that you believe in Him who He has sent.”
30Therefore they asked Him, “What sign will You perform then, that we may see it and believe You? What work will You do?
John 6
John 6:25-30