John 6:27-29, 57

Do not work for the food that perishes, but for the food that endures to eternal life, which the Son of Man will give to you. For on him God the Father has set his seal.” Then they said to him, “What must we do, to be doing the works of God?” Jesus answered them, “This is the work of God, that you believe in him whom he has sent.”

As the living Father sent me, and I live because of the Father, so whoever feeds on me, he also will live because of me.