(15) Thereafter the Levites shall be qualified for the service of the Tent of Meeting, once you have cleansed them and designated them as an elevation offering. (16) For they are formally assigned to Me from among the Israelites: I have taken them for Myself in place of all the first issue of the womb, of all the first-born of the Israelites. (17) For every first-born among the Israelites, man as well as beast, is Mine; I consecrated them to Myself at the time that I smote every first-born in the land of Egypt. (18) Now I take the Levites instead of every first-born of the Israelites; (19) and from among the Israelites I formally assign the Levites to Aaron and his sons, to perform the service for the Israelites in the Tent of Meeting and to make expiation for the Israelites, so that no plague may afflict the Israelites for coming too near the sanctuary. (20) Moses, Aaron, and the whole Israelite community did with the Levites accordingly; just as the LORD had commanded Moses in regard to the Levites, so the Israelites did with them. (21) The Levites purified themselves and washed their clothes; and Aaron designated them as an elevation offering before the LORD, and Aaron made expiation for them to cleanse them. (22) Thereafter the Levites were qualified to perform their service in the Tent of Meeting, under Aaron and his sons. As the LORD had commanded Moses in regard to the Levites, so they did to them. (23) The LORD spoke to Moses, saying: (24) This is the rule for the Levites. From twenty-five years of age up they shall participate in the work force in the service of the Tent of Meeting; (25) but at the age of fifty they shall retire from the work force and shall serve no more. (26) They may assist their brother Levites at the Tent of Meeting by standing guard, but they shall perform no labor. Thus you shall deal with the Levites in regard to their duties.
In the second reading of Parashat Beha'alotecha, Bamidbar (Numbers) 8:15–26, we read that the Levi’im were to serve in the Tent of Meeting (later the Beit HaMikdash) from the age of 25 to 50 years old.

- Each day of Sefirat Ha-Omer can be read as a day, week, month, or year. For example, 1 day of the omer can be equal to 1 year of a person’s life. This will make more sense later.
- The individual/entity can only attain the level of the Sefirah AFTER they have completed that year. For example, if someone is 21 years old, they would have completed all the combinations of Chesed, Gevurah, and Tiferet despite beginning their 22nd year.
- The number “0” and every subsequent “50th” milestone (e.g. 50, 100, 150, etc.) resets the count just like the Yovel (Jubilee) resets every 50th year (Vayikra [Leviticus] 25:8-16). Adding weight to this is the Maharal (Netivot Olam, Netiv HaTorah 1) who noted that the 50th is uncountable, as it belongs to the ethereal, elevated world that is beyond time itself. Furthermore, the 50th day specifically is also said to encompass all of the previous 49 days’ Sefirot, rather than represent one specific Sefirah.

- Avraham Avinu (Abraham our Father), who symbolizes the sefirah of chesed, was instructed to leave Haran at the age of 75. If the count resets every 50 years like the Yovel (Jubilee), then 75 minus 50 equals 25 which is equal to neztach within neztach, symbolic of Moshe (Moses) who received the Torah on Mount Sinai.
- Likewise, when Avraham (Abraham) was 99 years old he was told he would become the father of Yitzhak (Isaac). 99 minus 50 equals 49 which is malchut within malchut, symbolic of David HaMelech (David the King) who symbolizes the Mashiach (Messiah).
- Together we understand the promise of Yisrael (Israel) becoming a royal priesthood for HaShem being given hundreds of years prior to Matan Torah. As it says in Shemot (Exodus) 19:6, "...but you shall be to Me a kingdom of priests and a holy nation."
- If we then count the age at which Avraham (Abraham) left Haran, 75 years old, to the birth of Yitzhak (Isaac), 100 years old, it beautifully parallels the service of the Levi'im in the Beit HaMikdash, as 50 minus 25 equals 25, just as 100 minus 75 equals 25.
- Furthermore, Yitzhak Avinu (Issac our Father) became the father of Ya'akov (Jacob) at age 60. 60 minus 50 equals 10 which is tiferet within gevurah. Yitzhak (Isaac), of course, symbolizes the sefirah of gevurah, while Ya'akov Avinu (Jacob our Father) symbolizes the sefirah of tiferet.
- Ya'akov (Jacob) in turn became the father of Yosef HaTsadik (Joseph the Righteous) at age 91. 91 minus 50 equals 41 which is yesod within yesod, the sefirah of Yosef (Joseph).
(25) For David said, “The LORD God of Israel has given rest to His people and made His dwelling in Jerusalem forever. (26) Therefore the Levites need not carry the Tabernacle and all its various service vessels.” (27) Among the last acts of David was the counting of the Levites from the age of twenty and upward. (28) For their appointment was alongside the Aaronites for the service of the House of the LORD, to look after the courts and the chambers, and the purity of all the holy things, and the performance of the service of the House of God, (29) and the rows of bread, and the fine flour for the meal offering, and the unleavened wafers, and the cakes made on the griddle and soaked, and every measure of capacity and length; (30) and to be present every morning to praise and extol the LORD, and at evening too, (31) and whenever offerings were made to the LORD, according to the quantities prescribed for them, on sabbaths, new moons and holidays, regularly, before the LORD; (32) and so to keep watch over the Tent of Meeting, over the holy things, and over the Aaronites their kinsmen, for the service of the House of the LORD.
These thoughts are entirely my own unless stated otherwise.
