Explanation of Ramban - 22:13, 19 - debate between Rashi, Ibn Ezra and Ramban about the book cited in 21:14, and the meaning of the two poems recorded in the Sixth Aliyah.

Explanation of Ramban - 22:5, 22:31, 23:4, 23:16, 23:23, 24:1 - debate over what Bilam's abilities were: Rashi (prophet) vs. Ibn Ezra (astrologer) vs. Ramban (magician), and discussion of Bilam's prophetic abilities compared to Moshe.

Explanation of Ramban - 16:1, 4, 5 - 1) Debate between Ibn Ezra versus Ramban whether Korach's rebellion was before or after the spies, 2) Who joined Korach's rebellion and why? A) Rashi - Korach wanted power, and got his neighbors from Reuven to join. B) Rabbenu Chananel - Korach led Leviim in rebelling against the Kohanim's elevation. C) Ibn Ezra - Korach led firstborns in rebelling against the Leviim's elevation. D) Ramban - It was a disunited group, Korach wanted power, some people from Reuven opposed Moshe's leadership, and some firstborns opposed the Leviim's elevation

Explantion of Ramban - 1) 13:2 debate between Rashi vs. Ramban about what the mission of the spies was, and whether sending spies was a mistake to begin with, 2) 13:27, 13:32, 14:37 - Ramban's theory that the spies told lies about the land of Israel

Explanation of Ramban - Introduction, 5:2, 5:6, 8:1, 9:1 - Ramban's comprehensive theory, versus Rashi and Ibn Ezra, for the order and central themes of Sefer Bamidbar, particularly the placement of Sotah, Nazir, Menorah, and Pesach Sheni.

Explanation of Ramban - 5:18, 5:20 - 1) Debate between Rashi, Ibn Ezra and Ramban what the Torah means in calling the Sotah water 'bitter', and the debate over what the Ibn Ezra's secret is. 2) Ramban's explanation that Sotah only happens when the Jewish people are worthy of a miracle

Explanation of Ramban - 3:14 - Ramban's two explanations for why the Leviim were the smallest tribe, and discussion of Ohr Hachaim and Klei Yakar's (3:39) approach.

Explanation of Ramban - 26:16, Devarim 28:48 - discussion of Ramban's theory that the Vayikra tochacha refers to the first exile, and the Devarim tochacha refers to the second (current) exile, versus R. Avraham bar Chiya who argues precisely the opposite.