משלי, פרק ט״ז, פסוק כ״ו

Human effort is deeply connected to the mouth, which acts as the driving force behind a person's daily struggles. The nature of this struggle depends entirely on how one uses their mouth, whether for physical survival, the words they speak, or their spiritual growth.

In a practical sense, the need to work is an unavoidable part of human existence. The primary approach among commentators understands the mouth as a demanding and forceful master [מצודת ציון]. A person must work hard to survive, and this labor ultimately works to their own advantage. When hunger strikes and the mouth demands food, the effort put in beforehand allows a person to eat and be satisfied [רש״י, מצודת דוד]. However, this drive can easily become a trap. A person might work endlessly simply because they allow their appetite to control them. If they learned to minimize their physical desires, they could sustain themselves with far less effort [רלב״ג].

Shifting from physical hunger to the act of speaking, the mouth can also be viewed as a source of trouble. In this approach, the mouth is not demanding food, but rather acting as the root cause of a person's hardship [אבן עזרא], or even as a source of sin [עמנואל הרומי]. When someone speaks unnecessarily [ביאור שטיינזלץ], talks foolishly [עמנואל הרומי], or fails to learn wisdom [אבן עזרא], they bring upon themselves a lifetime of unnecessary struggle and pain. Their own words create the very troubles that force them to suffer.

On a spiritual level, human effort can be elevated toward learning and wisdom. A person can choose to suppress their physical appetite to focus their energy on gaining wisdom, creating a lasting, eternal benefit for themselves [רלב״ג]. Yet, there is a danger in this spiritual pursuit. If someone works hard to learn but keeps that knowledge entirely to themselves, their effort benefits no one else. This isolation occurs because they keep their mouth closed, refusing to teach. Had they chosen to share their wisdom with others, they would have created a much greater blessing for themselves and the world around them [אלשיך].