MR 4 Justin martyr apology analysis

In Justin Martyrs apology, his first paragraph talks about going to church and he explains how it is a form of unity between a town or country because people from the city and the country are all together in one place sharing in Gods love praying and giving thanks. Then he goes on to explain the Eucharist. He explains that near the end of mass they eat bread and wine, the body and blood of Christ. He states that only people who believe in Jesus and his resurrection are allowed to take it. You might be asking what happens if someone who doesn't believe in Jesus takes it and the consequence is all on that persons soul, not Jesus and it depends on the intention of the person. Do they know what the Eucharist is? If they do it has worse implications on their soul as if the person doesn't know.