In the Chumash, it is written: 'That which is impure and impure.' The question arises, how can something that physically sustains be considered impure? The answer lies not in the physical but in the spiritual domain. Eating impure food dulls the heart and imposes spiritual blockage.
Why does Torah prohibit certain foods? According to our Sages, consuming these foods affects one's spirituality by creating a desensitized heart. In contrast, permissible foods align with Torah's path, enhancing one’s spiritual vitality.
Another point discussed is the impact of intent. Doing a mitzvah is not just about the action done but involves doing it with intentional correctness. Fulfillment with the right intention brings about internal refinement.
This may be understood further in terms of teshuvah (repentance). When one repents genuinely, even past actions gain transformation, elevating them beyond their original state.
The Rebbe also discusses various levels of spiritual observance: some keep Torah law precisely because it transforms the observer on an inner level, while others are less aware of this process but still receive its benefits.
Conclusion: Actions and intentions play crucial roles in a Jew's service to Hashem. Observance that elevates heart and mind leads to greater heights of holiness and closeness to G‑d, which should be our constant aspiration, rising ever higher in accordance with the dictum: 'Go from strength to strength.'