לֹא תֹסִפוּ וְלֹא תִגְרְעוּ - Subtraction by Addition - פרשת ואתחנן

See source hereIn this shiur we explore the biblical prohibitions of Bal Tosif and Bal Tigra, which forbid adding to or subtracting from the divine commandments. Historical examples involving Moshe, King Solomon, and the Spies illustrate how even well-intentioned "improvements" lead to spiritual failure and the corruption of the original command. Ultimately, the Netziv emphasizes that authentic devotion must be guided by the formal structure of Halakhah rather than personal religious emotion or spiritual enthusiasm.