The Mosaic Covenant Part 1: Deliverance and Law

Today's Reading

At Mount Sinai, God enters into a new and more detailed covenant with Israel — the Mosaic covenant. This covenant does not cancel the promises to Abraham but builds on them, defining what life should look like for a people already saved by grace. The order is essential: God saves first, then gives the law.

Reflection

Before a single commandment is spoken, God makes a staggering declaration of identity: "You yourselves have seen what I did to the Egyptians, and how I bore you on eagles' wings and brought you to myself. Now therefore, if you will indeed obey my voice and keep my covenant, you shall be my treasured possession among all peoples, for all the earth is mine; and you shall be to me a kingdom of priests and a holy nation" (Exodus 19:4-6).

The logic is critical and often misunderstood. God does not say, "Obey me and I will redeem you." He says, "I have redeemed you — now live as my people." The deliverance from Egypt precedes the giving of the law. Grace comes before commandment. This is the structure of the Mosaic covenant, and it mirrors the structure of the gospel itself.

The Ten Commandments open with a reminder, not a demand: "I am the Lord your God, who brought you out of the land of Egypt, out of the house of slavery" (Exodus 20:2). The identity of the lawgiver is established by what He has already done. The commands that follow are not conditions for entering the relationship but guidelines for living within it.

Wright emphasizes that the Torah was given as the way of life for a people already redeemed. It was the family rule book, not the entrance exam. When later generations turned the law into a system of self-salvation, they distorted its original purpose.

Goldsworthy adds that the Mosaic covenant does not replace the Abrahamic but builds upon it. The promises to Abraham — people, land, blessing — remain in force. The law provides the specific shape of life for that promised people. It answers the question: now that God has rescued us, how should we live?

The covenant also includes consequences. Obedience will bring blessing; disobedience will bring curse (Deuteronomy 28). This conditional element is what distinguishes the Mosaic covenant from the unconditional promises to Abraham and David. Israel's experience of blessing in the land depends on their faithfulness — and as we will see, that faithfulness proves tragically unreliable.

Going Deeper

Paul's argument in Galatians rests on this very structure. The law, he says, came 430 years after the promise to Abraham and cannot annul it (Galatians 3:17). The Mosaic covenant was temporary and preparatory — a guardian to lead Israel to Christ (Galatians 3:24). It revealed sin, defined righteousness, and pointed to the need for something the law itself could never provide: a new heart.