Augustine of Hippo
Chapter XIII: On the Celebration of the Sabbath - The Christian Sabbath. We witness His good deeds, and we shall experience His rest following our own good actions. To symbolize this rest, He instructed the Jews to honor one particular day. The Jews interpreted this honor with a rather materialistic viewpoint, accusing the Lord of performing acts of salvation on that day. He justly responded by referencing the work of the Father, with whom He is fully engaged in both the governance of creation and our redemption. In this era of revealed grace, the obligation to observe the Sabbath, which was previously marked by the observance of one day, has been lifted from the faithful.
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In this grace, the Sabbath is now perpetually celebrated by those who, in all their good deeds, act in anticipation of future rest, and do not take pride in their works as if they have achieved anything without divine assistance. Recognizing and perceiving baptism as the Sabbath, or the Lord's repose in the tomb, individuals find rest from their former actions, and, having begun to live anew (Rom. 1:4), they understand that God works within them, simultaneously both acting and resting; on one hand, showing Himself through His rightful governance of creation and on the other, eternally resting within Himself. For additional interpretation, refer to Gen. 2:3.
Thus, the Jews were instructed to observe the Sabbath both in body and in other essential ordinances. A form of deliverance was mandated: that which symbolizes this deliverance must be acted upon. However, true spiritual deliverance embodies a peace of heart achieved through the clarity of righteous knowledge. Therefore, the one who genuinely observes the Sabbath is he who refrains from sin. This is consistent with the command given to those who observe the Sabbath: do not engage in servile work. For everyone who sins is a servant to sin (John 8:34).
We are not required to observe the Sabbath literally, as a respite from physical labor, as the Jews do—their very observance is often seen as lacking depth unless it conveys some form of mental rest. Thus, we rightly presume that everything figuratively described in Scripture serves to stir the love that leads us to rest; for in the Decalogue, the command regarding rest is presented figuratively—it is delightful but genuinely sacred and assured only in God. Nevertheless, the Lord's Day is not commanded of the Jews but is designated for Christians in honor of the Lord's resurrection, and therefore it is a celebratory day. The souls of all the saints remain at rest until the resurrection of their physical bodies, awaiting the animation brought forth by the newly received forms.
It may seem unnecessary to instruct a Christian to uphold the Sabbath. In truth, it is not merely unnecessary, but essential: for it serves as a type (Col. 2:17). The Sabbath protects the people from servile labor—are we not also forbidden to engage in servile work? Hear the Lord: everyone who sins is a servant to sin (John 8:34). Observing the Sabbath is akin to depending on God to safeguard us from sin, for it is stated, God rested on the seventh day from all His works (Gen. 2:2). God rested—thus, He also provides you rest. Where did God labor to achieve rest, He who created all things by His Word?