In Areopagitica, Milton talks heavily about the topic of food and eating because it was something that was familiar to all his readers. Not only does everyone eat, but in the Bible that all his good Christian readers would have read there is much said about what foods are right or wrong to eat. Milton uses passages in the Bible to support his analogy that if man is free to choose what is right or wrong to consume in order to nourish his physical body, why should he not be able to judge what books should nourish him mentally"

As said above, Milton is saying that like eating, man should be able to choose what he reads. In the Old Testament, God gave Moses and Aaron a precise list of what animals they could or couldn't eat. In Acts 10.13,15, the apostle Peter has a vision where God tells...