Saul’s Podship
Theological Scriptorium

Volume 43: Ten Commandments & OT Laws

The Decalogue, Mosaic Covenant & the Law in the Christian Life

Ten Commandments & OT Laws investigates the covenantal law delivered by Yahweh to Israel at Mount Sinai. It examines the Decalogue's suzerain-vassal treaty form, the historic threefold division into moral, civil, and ceremonial laws, and how Christ fulfills the Law to write it upon believers' hearts.

The Ten Commandments given at Sinai: their historical covenant structure, moral permanence, tripartite law classification (Moral, Civil, Ceremonial), and role in Christ.

Key facts

  • The Ten Commandments (Decalogue) form the moral bedrock of the Sinai covenant, divided into duty toward God (Commands 1–4) and duty toward neighbor (Commands 5–10).
  • Historic theology categorizes the Mosaic Law into Moral (perpetual reflection of God's character), Ceremonial (sacrifices pointing to Christ), and Civil (Israel's national civic code).
  • Jesus summarized the entire Law in two Great Commandments: loving God with all our heart, soul, and mind, and loving our neighbor as ourselves (Matthew 22:37-40).
  • The Three Uses of the Law (Usus Legis) serve as a mirror revealing sin (pedagogical), a bridle restraining civic evil, and a lamp guiding Christian sanctification.

Frequently asked questions

Are Christians still obligated to keep the Ten Commandments?

Yes; while believers are not under the Law as a covenant of works to earn salvation, the moral law permanently reflects God's holy character and serves as a loving guide for Christian sanctification.

Why don't Christians observe Old Testament food laws or animal sacrifices?

The Ceremonial laws were dietary and sacrificial shadows that found their complete, once-for-all fulfillment in the finished work and pure sacrifice of Jesus Christ (Hebrews 10:1-10, Mark 7:19).

Why do Christians worship on Sunday rather than Saturday (Sabbath)?

The early Church gathered on Sunday ('the Lord's Day') to celebrate the resurrection of Jesus Christ, which inaugurated the new creation and true spiritual Sabbath rest (Hebrews 4:9-10).

What does Paul mean that 'Christ is the end of the law' (Romans 10:4)?

The Greek telos means 'goal' or 'culmination'—Christ is the ultimate aim toward which the entire Law pointed, offering righteousness to everyone who believes.

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