The Sabbath transcends a mere day of rest, standing as an eternal testimony and a profound symbol of the covenant between God and His people. It is a living declaration of the world's creation. Although the Ten Commandments were proclaimed publicly for all to hear, the inner meaning and immense reward of the Sabbath were given privately. It remains a hidden secret between God and the Israelites, given discreetly to prevent the jealousy of other nations [רבנו בחיי, תורה תמימה]. This exclusive bond is likened to an intimate conversation between a king and a queen. Consequently, the observance of this day is the sole inheritance of the Israelites, and other nations are not commanded to keep it [רקנאטי, תורה תמימה].
This covenant serves as a historical promise that will never be broken. Throughout history, the Israelites have sacrificed their lives to observe the Sabbath, and through this devotion, the day has been preserved in their hands [תורה תמימה, מלבי״ם]. Furthermore, when the nations of the world witness this strict adherence to resting from labor, the Sabbath transforms into a universal sign of Israel's unique status, ultimately magnifying God's honor on earth [העמק דבר]. The act of observing the day is a profound declaration of faith. Conversely, performing labor on this day is akin to denying the very act of creation [אבן עזרא].
While recounting the six days of creation, the sea is notably absent from the divine record. A sign must be something clearly visible, and unlike the land or the sky, water does not retain any permanent, recognizable mark [פענח רזא].
The concept of God resting and catching His breath presents a deep theological question, as God never experiences fatigue. The primary approach among commentators is that the Torah speaks in human terms to make these concepts accessible. It uses the idea of catching one's breath after exertion to illustrate the completion of the creation process [רש״י, אבן עזרא, רלב״ג]. Other scholars suggest this rest reflects the joy and satisfaction of the Creator. When God sees His work completed exactly as He intended, He draws deep satisfaction from it [ביאור יש״ר]. Another perspective explains that God ceased governing the world through the fixed laws of nature, which seemingly contrast with His absolute freedom. Instead, He returned to His inner essence of governing through divine providence, judgment, and miracles [מלבי״ם, רש ר הירש].
Alternatively, this cessation of work may not refer to the Creator at all, but rather to the creation itself. On the seventh day, the process of bringing matter from potential into reality ended. The created beings reached their final perfection, acquiring the ability to reproduce and exist perpetually, essentially receiving a soul [הכתב והקבלה, העמק דבר]. This state of perfection directly impacts humanity. On the Sabbath, a person receives an extra spiritual soul, granting an expansiveness of heart and a deep sense of tranquility that prepares them to fully achieve their life's purpose [ספורנו, תורה תמימה].
The timing of these events, culminating in the giving of the Tablets of the Covenant to Moses, suggests that the Torah itself was given to the Israelites on the Sabbath. The Tablets were formed during the twilight hours just as rest and holiness descended upon the world [קיצור בעל הטורים, חתם סופר]. By resting on the Sabbath, the Israelites actively participate with God in His rest, bringing the covenant to life in a practical, tangible way [ביאור שטיינזלץ].