'Food' in the Bible

For indeed, [although you] ought to be teachers {by this time}, you have need of someone to teach you again the beginning elements of the oracles of God, and {you have need of} milk, not solid food.

But solid food is for the mature, who because of practice have trained their faculties for the distinguishing of both good and evil.

concerning [instead] only food and drink and different washings, regulations of outward things imposed until the time of setting [things] right.