RKJNT(i)
27 Do not labour for the food which perishes, but for that food which endures to eternal life, which the Son of man shall give to you: for on him has God the Father set his seal.
28 Then they said to him, What shall we do, that we might work the works of God?
29 Jesus answered and said to them, This is the work of God, that you believe in him whom he has sent.