Bamidbar
The Book of Bamidbar — "In the desert" — begins with Hashem commanding Moshe to take a census of all men over age twenty — old enough for service. The count reveals just over 600,000. The levi'im are counted separately later on because their service will be unique. They will be responsible for transporting the Mishkan and its furnishings, and assembling them when the nation encamps. The 12 Tribes of Israel, each with its banner, are arranged around the Mishkan in four sections: east, south, west and north. Since Levi is singled out, the tribe of Yosef is split into two tribes, Efraim and Menashe, so there will be four groups of three. When the nation travels, they march in a formation similar to the way they camp.
A formal transfer is made between the first-born and the levi'im, whereby the levi'im take over the role the first-born would have had serving in the Mishkan if not for the sin of the golden calf. The transfer is made using all the 22,000 surveyed levi'im from one month old and up. Only levi'im between 30 and 50 will work in the Mishkan. The remaining first-born sons are redeemed with silver, similar to the way we redeem our first-born today. The sons of Levi are divided into the three main families of Gershon, Kehat and Merari (besides the kohanim — the special division from Kehat's family). The family of Kehat carried the Menorah, the Table, the Altar and the Holy Ark. Because of their utmost sanctity, the Ark and the Altar are covered only by Aharon and his sons, before the levi'im prepare them for travel.
Naso
The Torah assigns the exact Mishkan-related tasks to be performed by the families of Gershon, Kehat, and Merari, the sons of Levi. A census reveals that over 8,000 men are ready for such service. All those ritually impure are to be sent out of the encampments.
If a person, after having sworn in court to the contrary, confesses that he wrongfully retained his neighbor’s property, he has to pay an additional fifth of the base-price of the object and bring a guilt offering as atonement. If the claimant has already passed away without heirs, the payments are made to a kohen.
In certain circumstances, a husband who suspects that his wife had been unfaithful brings her to the Temple. A kohen prepares a drink of water mixed with dust from the Temple floor and a special ink that was used for inscribing G-d's Name on a piece of parchment. If she is innocent, the potion does not harm her, but, rather, it brings her a blessing of children. If she is guilty, she suffers a supernatural death.
A Nazir is one who vows to dedicate himself to G-d for a specific period of time. He must abstain from all grape products, grow his hair and avoid contact with corpses. At the end of this period he shaves his head and brings special offerings. The kohanim are commanded to bless the people. The Mishkan is completed and dedicated on the first day of Nissan in the second year after the Exodus. The prince of each tribe makes a communal gift to help transport the Mishkan, as well as donating identical individual gifts of gold, silver, animal and meal offerings.
