5621. Wax and stacte. That this signifies the truths of good of the interior natural, is evident from the signification of “wax,” here aromatic wax, as being the truth of good (of which in what follows); and from the signification of “stacte,” as also being truth from good (see n. 4748). Their being of the interior natural is because these spices are purer than resin and honey, and are therefore mentioned in the second place; for such particulars are enumerated in the Word in accordance with the order. By “wax” here is not meant common, but aromatic wax, such as storax. This wax is signified by the term used in the original language, and spice also by the same. Hence it is plain why this aromatic wax signifies the truth of good; for all spices, being sweet-scented, in the internal sense signify the truths which are from good. This may be seen from the fact that truths from good are perceived in heaven pleasantly, like sweet-scented things in the world; and therefore when the perceptions of the angels are turned into odors, as of the Lord’s good pleasure often happens, they are then smelt as fragrances from spices and from flowers. This is the reason why frankincense and incense were compounded of materials of grateful odor, and were employed for a holy use; and also why aromatics were mixed with the anointing oil. One who does not know that such things derive their cause from things perceived in heaven, may be of the opinion that they were commanded merely to render outward worship grateful; but in that case there would be in them nothing of heaven, or nothing holy, and consequently such matters of worship would not have anything Divine in them. (See what has already been shown on this subject; that frankincense and incense, and also the fragrant substances used in the anointing oil, were representative of spiritual and celestial things, n. 4748; and that the spheres of faith and love are turned into grateful odors, and therefore grateful and sweet-scented and also spicy odors signify truths of faith which are from the good of love, n. 1514, 1517-1519, 4628)

Heaven" and "heavens" are used many times in the Bible, with a couple of variations of meaning. Sometimes it is relatively literal, including times when the Lord is identified with it (“Our Father, who art in the heavens,” for instance), meaning heaven as the eternal home for people who chose to do what is good in this life and let the Lord lead them to a love of being good. In other references, particularly when it is paired with “earth” or other lesser ideas (“In the beginning God created the heavens and the earth,” for instance), “heaven” or “heavens” means our internal life as opposed to our external life. In a way, these two meanings are really the same. If you think about the importance of your deepest thoughts and feelings, you can see that they are the “real” you, much more so than your body is. The relationship between the spiritual world and the natural world is similar; the spiritual world is the “real” one, and controls the natural world the same way our thoughts and feeling control our actions. So in both cases, “heaven” describes a deeper reality that we will enter fully after we die.