Korach, Moses' first cousin, stages a rebellion against Moses and Aaron. Together with a few ringleaders, he gathers 250 men of renown and accuses Moses and Aaron of power hoarding. "The entire congregation is holy, and the L-rd is in their midst. So why do you raise yourselves above the L-rd's assembly?" They took specific issue with the appointment of Aaron as High Priest. Moses proposes that on the following day they all participate in a test which would determine who indeed was worthy of the mantle of High Priest. Everyone would bring an incense offering to the Tabernacle, and G‑d would make known His choice for High Priest. Moses then tries to placate the rebellious group, unsuccessfully attempting to dissuade them from participating in this suicidal test.

The mitzvah of challah is contained in this section: when one kneads dough, a portion must be taken and given to the priest. If the Sanhedrin (rabbinic supreme court) erroneously permits an act of idolatry, and the community acts upon this permission, the Sanhedrin must bring a special sin-offering, detailed in this section.

The Jews are told that upon entering Israel an individual who pledges to bring a sacrifice must also bring an accompaniment consisting of a wine libation and a flour offering mixed with olive oil.

This section continues with the rules of the aforementioned sacrifice accompaniments — detailing the quantities of wine, flour and oil to be brought with various species of livestock.

The Jewish people rejected the pleas of Joshua and Caleb, and decided to stone them. G‑d intervened, His glory appearing over the Tabernacle. G‑d informs Moses of His decision to instantaneously wipe out the Israelites in a massive plague due to their persistent lack of faith. Moses successfully invoked G‑d's mercy and pointed out that this mass execution will cause a mammoth desecration of G‑d's name. "People will assume that G‑d lacked the power to defeat the Canaanites in battle, so He instead slaughtered His people," Moses argued. Although G‑d agreed not to immediately wipe out the Israelites, that generation would not enter the Land. G‑d instructs the Jews to reverse course, and to head back to the desert.

The scouts spent forty days reconnoitering the land. They returned to the Israelite encampment with specimens of Canaan's produce, and with an ominous report. They conceded that the land flowed with milk and honey, but they warned that its population was mighty and the cities well fortified and impossible to conquer. Only Caleb and Joshua, the scouts representing the tribes of Judah and Ephraim, dissented. They argued that the land was magnificent, and there was no reason for concern because G‑d could surely bring the Israelites victory in battle. The Jewish people spent that entire night wailing, expressing their preference to return to Egypt rather than be defeated in battle by the Canaanites.

G‑d allows Moses to send scouts to reconnoiter the land of Canaan in preparation for their anticipated invasion of the land. One member of every tribe — with the exception of the tribe of Levi — was chosen for this task. Moses instructed the scouts to bring back a report regarding the nature of the land; its strengths and weaknesses. He also instructed them to bring back samples of the land's produce.

No sooner than the Jews start traveling, and they start complaining. First they complain about the "arduous" journey. Then they grumble about the manna, expressing their desire for meat. Moses turns to G‑d and insists that he cannot bear his leadership role any longer. G‑d tells Moses to gather seventy elders who will assist him in his leadership duties. He also promises to provide the Jews with an abundance of meat — "until it will come out of their noses..." Moses gathers seventy elders and brings them to the Tabernacle where his holy spirit is imparted upon them. Two additional elders, Eldad and Medad, remain in the camp, and the holy spirit descends upon them, too, and they prophesy as well. Joshua is displeased by this, and Moses placates him.

On the first anniversary of the Exodus, the Jews are instructed to bring the Paschal Offering. Certain individuals, however, couldn't participate because they were ritually impure. These people lodged a complaint, which Moses then transmitted to G‑d. G‑d responds by designating a "Second Passover" to be observed exactly one month later. Anyone who could not offer the Paschal Offering in its proper time must do so on the Second Passover. G‑d then informs Moses the laws of the Second Passover.

On the first anniversary of the Exodus, the Jews are instructed to bring the Paschal Offering. Certain individuals, however, couldn't participate because they were ritually impure. These people lodged a complaint, which Moses then transmitted to G‑d. G‑d responds by designating a "Second Passover" to be observed exactly one month later. Anyone who could not offer the Paschal Offering in its proper time must do so on the Second Passover. G‑d then informs Moses the laws of the Second Passover.

The exact prescribed initiation procedure is followed, and the Levites are consecrated to G‑d — in stead of the firstborn who lost their hallowed status when they participated in the sin of the Golden Calf. Towards the end of this section we learn the Levite service age-requirements and retirement age.