How can we understand that which is spiritual? We may read in the Scriptures, light is where God lives, “Because He dwells in light unapproachable.” We want to understand that immaterial light is inhabited by the incorporeal and invisible God.
And just as the material light falls on the eyes of our body, so that divine light illuminates the eyes of our mind. So, by pointing to the nature of visible objects, we rise to think of the invisible. Therefore, we convert to its spiritual meaning certain things we read in the Scriptures.
Jesus said at one point, “You need to eat my flesh and drink my blood, if you want eternal life.”
Then Jesus said to them, “I am telling you the truth when I say to you, Except you eat the flesh of the Son of man, and drink his blood, you have no life in you. Whoever eats my flesh, and drinks my blood, has eternal life; and I will raise him up at the last day. “
Jesus said to his disciples, “Does this offend you? It is the spirit that quickens; the flesh profits nothing: the words that I speak to you, they are spirit, and they are life. ” John 6
Eating the flesh of another human is a terrible thought. We call it cannibalism. Yet, Jesus uses such language to make his point. He was using bread to make his point but switches to this. Why?
There can be only one reason. It is of the highest importance. Some said, we cannot listen to this man any longer. They left. Jesus then spoke to his closest disciples. Of course, it is spiritual language. What good would eating any kind of flesh be in gaining eternal life? It is spiritual language, spiritually understood. These words are life-giving.
He, later, institutes eating bread and drinking wine as a way to remember him. He says, “This is my body, broken for you; this is my blood, poured out for you.”
The physical has spiritual meaning. We understand the invisible by the visible. Even more so, acting out the spiritual by doing something physical like eating bread and drinking wine, we understand something wonderful.