The Law of Moses, often referred to as the body of laws delivered through Moses, encompasses a wide range of instructions that are not in opposition to grace and truth but are layered upon by them, working together in agreement as part of a continuing revelation. This law, sometimes called the civil law of Israel, originally had no sacrifices, but later came to include both civil and ceremonial components, which are intermingled. As noted in Luke 2:22-24, the Law of Moses is also termed the Law of the Lord, indicating that all biblical law, including ceremonies and rituals, originates from God, with Moses merely serving as the deliverer. Despite common perceptions, the Law of Moses is not confined to a lesser status compared to the Ten Commandments; it is equally part of God's law, supporting and extending the foundational principles of the Commandments. Malachi 4:4 urges remembrance of the Law of Moses, including statutes and judgments, even in end-time contexts, emphasizing its enduring relevance. This law is not abolished but remains binding in its spirit, as Jesus affirmed in Matthew 5, stating that not one jot or tittle will pass from the law until all is fulfilled. Specific aspects of the Law of Moses, such as ceremonial laws involving sacrifices and washings, have been set aside under the New Covenant, as evidenced in Hebrews 9:8-10 and Hebrews 10:18, where these practices are described as temporary impositions until the time of reformation, replaced by the superior sacrifice of Jesus Christ. However, the civil aspects, which guide community life and regulate specific behaviors, continue to apply. Examples from Leviticus and Exodus, such as laws against defrauding neighbors, talebearing, and afflicting widows or orphans, illustrate ongoing obligations to uphold justice and respect, demonstrating that these laws are extensions of the Ten Commandments. The Jerusalem Council in Acts 15 addressed whether Gentiles must keep ceremonial aspects of the Law of Moses for salvation, concluding that only specific laws, such as abstaining from idol pollution, fornication, strangled things, and blood, were immediately required, with the expectation that further instruction would be received through synagogue teachings on the Sabbath. This indicates that the apostles did not believe in wholesale dismissal of the Law of Moses but recognized its continued relevance, particularly in civil matters, applying equally to Israelites and strangers alike, as stated in Exodus 12. Furthermore, the Law of Moses served as the constitution for the nation of Israel, a role akin to foundational legal documents in modern contexts, underscoring that the church lacks authority to abolish it entirely, only addressing ceremonial aspects related to devotion and justification. Jesus magnified the law, broadening its application from specific letter to spiritual intent, as seen in laws like Leviticus 19:19 regarding mixed materials, which expand to principles of maintaining quality and purity in broader applications. Thus, while certain ceremonial practices are not physically required, the essence and intent of the Law of Moses remain vital for guiding conduct and community life.

Paul affirms his belief in all things written in the law and the prophets even after writing Romans and Galatians, demonstrating that the Mosaic law remains authoritative rather than abolished. He employs the term law in multiple senses, one of which specifically denotes the Mosaic law alongside references to the Pentateuch, individual commandments, or the will of God written on Gentile hearts. When the contextual subject concerns justification, Paul correctly denies that deeds of any law, including the Mosaic law, can justify anyone, since the law's purpose is to reveal sin rather than to provide righteousness or salvation. When the subject turns to sanctification, however, he upholds the continuing necessity of keeping the law, including its Mosaic elements, as a guide for conduct and character. The Mosaic law thus forms part of the broader divine instruction that defines duty to God and neighbor, exposes human failure, and fosters humility leading to repentance. This framework connects directly to grace, which supplies the motive and power to obey without nullifying the law's requirements. The text further distinguishes temporary additions attached to the Mosaic system, such as most sacrifices, from enduring moral statutes, showing that the core Mosaic revelation continues to instruct believers under the New Covenant while certain ceremonial aspects have been set aside by Christ's once-for-all sacrifice.

The Law of Moses is presented as a code phrase for the laws, rituals, and traditions of Judaism rather than for the Torah or God's written Word. It encompasses the oral law, or halaka, consisting of accumulated customs and regulations added after the return from Babylon, including numerous minute rules that the Pharisees required of proselytes. This body of teaching is described as a yoke that neither the fathers nor the present generation could bear, functioning as an unbearable burden because it demanded perfect observance for justification. In the Jerusalem conference of Acts 15, certain Pharisees insisted that Gentiles must be circumcised according to the custom of Moses and keep the Law of Moses to be saved, effectively requiring them to become Jews. The apostles rejected this demand, declaring that salvation comes through the grace of the Lord Jesus Christ in the same manner for both Jew and Gentile. Circumcision under this Law of Moses had been transformed from a covenant sign into a required work for salvation, whereas under the Abrahamic covenant it served only as a mark of inclusion without conferring justification. The conference therefore imposed no greater burden than four practical prohibitions intended to prevent offense between Jewish and Gentile believers and to facilitate fellowship. These instructions did not abolish God's law, which the apostles affirmed remains binding on all Christians. The broader message underscores that justification is by grace through faith alone, not by any works of the Law of Moses, while God's commandments continue to define sin and guide righteous living for every member of the church.