Meta. A group of thoughts pertaining to conservation of substance, built up in the subjective consciousness of man (Egypt) by his higher ideals (Israelites) while they are in bondage to the darkened, sense thoughts that the Egyptians represent (a treasure city, "store-city," built in Egypt by the Israelites when in slavery to the Egyptians).
This conservation of substance in the subconsciousness is built in sorrow and bondage, and seemingly is hemmed in on every side by sense thoughts (narrow place, narrow pass). Yet the time must come when the darkened, sense rule is removed from the whole consciousness of man. Then all the substance in his organism will be used joyously to his true upbuilding in spirituality and perfection. (Some authorities find opening of the mouth, very great space, in the meanings of Pithom. This makes one think of II Samuel 22:20:"He brought me forth also into a large place;He delivered me, because he delighted in me").