Leviticus 8: Oil is Thicker than Wine

“וַיִּצֹק מִשֶּׁמֶן הַמִּשְׁחָה עַל־רֹאשׁ אַהֲרֹן וַיִּמְשַׁח אֹתוֹ לְקַדְּשׁוֹ” (ויקרא ח׳:י״ב).He poured some of the anointing oil upon Aaron’s head and anointed him, to consecrate him (verse 12). Chapter 8 of Leviticus is almost like the “ויקהל־פקודי” of the inauguration ceremony laid out by ה׳ at the end of Exodus. A key part of the ceremony is the pouring of the anointing oil on the vessels of the Mishkan, and most importantly, on Aaron’s head. The anointing oil acts as the link between the vessels and Aaron. Just like the vessels act as the conduit between the people and the service to ה׳, so too does Aaron.Yaacov is the first person in Tanach to use oil as an anointing medium. In “וַיַּשְׁכֵּם יַעֲקֹב בַּבֹּקֶר וַיִּקַּח אֶת־הָאֶבֶן אֲשֶׁר־שָׂם מְרַאֲשֹׁתָיו וַיָּשֶׂם אֹתָהּ מַצֵּבָה וַיִּצֹק שֶׁמֶן עַל־רֹאשָׁהּ” (בראשית כ״ח:י״ח), he pours oil over the stones that acted as his resting place when he had the dream about the angels. Yaacov’s action is not mandated by ה׳ but is done spontaneously by Yaacov. Yaacov repeats this ceremony after speaking with ה׳ near Paddan-Aram.Sforno gives two reasons for Yaacov’s actions in Genesis 28: either he poured the oil to set up the pillar as a future altar or he did so to recognize the spot when he returned later. The first answer is a clear link between the actions of Yaacov and the later actions of Moshe. It is possible that this answer is anachronistic and informed by what Moshe does, as the text does not provide any indication of how Yaacov knew to do this. The second answer describes the oil as a marker. In this reading, the anointing of the Mishkan and Aaron with the oil is a way for ה׳ to mark the vessels and the kohen as important focal points. The pouring of the oil on Aaron confers a special level of holiness as well. In two perakim, Aaron is told he cannot mourn for his sons and leave the Mishkan “וּמִפֶּתַח אֹהֶל מוֹעֵד לֹא תֵצְאוּ פֶּן־תָּמֻתוּ כִּי שֶׁמֶן מִשְׁחַת ה׳ עֲלֵיכֶם” (ויקרא י׳:ז׳).The Mishnah in Horayot 3:4 explains that a Kohen Gadol who was not anointed with the special oil cannot bring the special bull offering on Yom Kippur. The oil, therefore, had a significance that was lost when the oil itself ceased to be used. The kohanim were not the only ones anointed with the special oil. Later in the times of the kings, the oil is also used to anoint the king. Shmuel uses it to anoint Shaul and David in שמואל א׳ י׳ and ט״ז. After David is anointed, he immediately begins to tap into prophecy with ה׳.The scientific properties of oil also make it ideal for special anointing ceremonies. 1. Viscosity and Molecular Structure: Viscosity is a measure of a fluid’s resistance to flow. Oils are generally more viscous than water or wine because: Oils are composed of long-chain fatty acids and triglycerides, which create stronger intermolecular forces (van der Waals interactions). Water and wine (mostly water + ethanol) have smaller molecules and weaker cohesive forces, so they flow easily and evaporate quickly.2. Hydrophobic vs. Hydrophilic Oils are hydrophobic (repel water) and nonpolar, so they don’t mix with water and don’t evaporate easily. This makes oil ideal for lasting application—it clings to surfaces like skin or objects, forming a protective layer.Water or wine, being polar, evaporates quickly and doesn’t adhere well to skin or porous materials. 3. Symbolic and Practical Effects Because oil spreads slowly and penetrates surfaces, it creates a visible sheen and a tactile sense of permanence.In ancient rituals, this permanence symbolized enduring holiness and consecration.Wine or water would drip off and disappear, lacking the same physical and symbolic staying power. 4. Aroma and Additives Anointing oils often contained fragrant compounds (like myrrh or cinnamon), which dissolve well in oil but not in water. This allowed oil to carry aromatic and preservative qualities, enhancing its sacred role.