John 6:27-29

6:27 Do not work for the food that disappears, but for the food that remains to eternal life – the food which the Son of Man will give to you. For God the Father has put his seal of approval on him.”

6:28 So then they said to him, “What must we do to accomplish the deeds God requires?” 6:29 Jesus replied, “This is the deed God requires – to believe in the one whom he sent.”