Arcana Coelestia # 8682
8682. 'To eat bread with the father-in-law of Moses before God' means making their own these things coming from Divine Good. This is clear from the meaning of 'eating' as making one's own, dealt with in 3168, 3513 (end), 3596, 3832, 4745; and from the meaning of 'bread' as the good of love, dealt with in 2165, 2177, 3464, 3735, 4211, 4217, 4735, 5915, its coming from Divine Good being meant by the statement that they were going to eat bread 'before God'. Here 'bread' is used to mean all the food they had then, in particular the flesh of the sacrifices; for when sacrifices were offered, the flesh in them was eaten beside the altar. For the meaning of 'bread' as all food in general, see 2165.
The reason why the flesh of the sacrifices was eaten was in order that making heavenly good one's own might be represented, as well as togetherness in love. The flesh of a sacrifice, eaten by them then, meant the good of love, which was why this was for them a sacred feast. For the meaning of 'flesh' as the good of love, see 7850. From this one can see what the Lord meant when He said that they were to eat His flesh, John 6:53-56, and also, when He instituted the Holy Supper, that the bread was His body, Matthew 26:26. No one can possibly know what He meant then unless he knows that His words have an inner sense, and that in this sense celestial and spiritual realities are meant instead of natural things, and that natural things correspond to those realities and have spiritual meanings in keeping with correspondences. Without knowledge of these things no one could ever know why the Holy Supper was instituted, what is holy about the bread, why the bread is the body and is the flesh, and countless other questions besides these.
John 6:53-56
53
Jesus therefore said to them, "Most certainly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you don't have life in yourselves.
54
He who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day.
55
For my flesh is food indeed, and my blood is drink indeed.
56
He who eats my flesh and drinks my blood lives in me, and I in him.