'Food' in the Bible

since his disciples had gone off into town to buy food.

But he told them, "I have food to eat that you know nothing about."

Jesus told them, "My food is doing the will of the one who sent me and completing his work.

Do not work for food that perishes but for food that lasts for eternal life, which the Son of Man will give you, because God the Father has set his seal on him."

because my flesh is real food, and my blood is real drink.