Fulfilled, Not Forgotten: Discovering God's Heart Through the Law

Why Study the Law If We Are Under Grace?
Many Christians avoid the Old Testament Law because they rightly understand that we are not saved by keeping it. Others read the Law only as a list of rules that no longer apply. Yet Scripture presents a different picture. The Law remains valuable—not as a means of justification, but as a revelation of the heart and character of God.

The psalmist declares, "Oh how I love your law!" (Psalm 119:97). David was not celebrating legalism. He was delighting in what the Law revealed about the God who gave it.
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As followers of Jesus, we are not called back under the Law as a covenant of salvation. We are saved by grace through faith. Christ has fulfilled the Law on our behalf, accomplishing what we never could. Yet the Law still teaches us. It still reveals God's priorities. It still exposes our hearts. Most importantly, it still shows us what righteousness looks like.

The Threefold Division of the Law
The Westminster Confession of Faith provides a helpful framework for understanding the continuing value of the Mosaic Law.

The Confession distinguishes three categories of law:
Moral Law – God's enduring standards of righteousness, summarized in the Ten Commandments.

Ceremonial Law – laws concerning sacrifices, rituals, purity regulations, and temple worship that pointed forward to Christ and were fulfilled in Him.

Civil (Judicial) Law – laws governing Israel as a covenant nation under God's direct rule.
While Christians generally agree that the ceremonial laws have been fulfilled in Christ and that Israel's civil laws are no longer binding as national legislation, the Westminster divines recognized that those civil laws still contain wisdom for God's people.

Thus they wrote that the judicial laws have expired "excepting the general equity thereof."
That phrase--general equity—is one of the most important yet overlooked principles for reading the Law.

It means that while we are not required to replicate ancient Israel's legal system, we are called to discern the enduring principles embedded within those laws.

The form may pass away. The wisdom remains. The specific command may belong to ancient Israel. The character of God revealed through that command remains eternally relevant.

Looking Beyond the Rule to the HeartConsider the command to build a parapet around the roof of a house (Deuteronomy 22:8). Most Christians do not have flat roofs where people gather. Yet the principle remains clear: God's people should take responsibility for preventing foreseeable harm to others. The law itself may not directly apply, but the heart behind the law certainly does. Likewise, when Israel was commanded not to take a millstone as collateral for a debt (Deuteronomy 24:6), God was revealing His concern for human dignity and livelihood. The principle remains: justice should not destroy a person's ability to fulfill their God-given responsibilities.

In this way, the Law becomes a window into the Father's heart. When we meditate on these laws, we are not merely studying ancient regulations. We are learning what God values.
We discover His concern for justice. His compassion for the vulnerable. His commitment to truth. His desire for restoration. His protection of human dignity. His vision for human flourishing. The Purpose of the LawPaul explains in Galatians that the Law was never intended to justify sinners.

"The law was our guardian until Christ came" (Galatians 3:24).

The Law exposes sin. It reveals our need for a Savior. It drives us to Christ. Yet even after coming to Christ, the Law still serves a purpose. Not as a ladder to climb toward salvation.
Not as a checklist for earning God's favor. But as a mirror. It shows us what God's righteousness looks like. It reveals the kind of life that Jesus perfectly lived and died to give us. The Law cannot transform us. But it can reveal where transformation is needed.
The Spirit and the LawUnder the New Covenant, God has given us something Israel longed for but did not fully possess. The Holy Spirit.

The prophets promised a day when God would write His Law on the hearts of His people (Jeremiah 31:33; Ezekiel 36:26–27). That promise has been fulfilled in Christ. The Christian life is therefore not about following an external ledger of rules. It is about receiving a new heart. We are no longer merely called to obey the letter. We are called to embody the heart.
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The Spirit is actively forming Christ within us, renewing our minds and shaping our desires.
Yet the Law remains useful because it helps us evaluate whether our lives increasingly reflect the character of God. Do we love justice? Do we practice mercy? Do we honor truth? Do we care for the vulnerable? Do we steward our resources faithfully? Do we reflect God's priorities? When the answer is no, the solution is not to try harder. The solution is to surrender more deeply. The Law reveals the gap. The Spirit closes it. Sanctification is not self-improvement. It is Spirit-enabled transformation. As we behold Christ, submit to the Spirit, and renew our minds through Scripture, the very righteousness that the Law describes becomes increasingly visible in our lives. What This Series Will ExploreThis series is not an attempt to place Christians back under the Mosaic Law. Nor is it an attempt to recover ancient Israel's legal system.

Instead, each post will explore a specific law from the Torah and ask three questions:

1. How was this law fulfilled in Christ?
2. What does this law reveal about the character and priorities of God?
3. What is the general equity principle that continues to guide believers today?

Through these explorations, we will discover that the Law is far more than a collection of ancient commands. It is a revelation of the Father's heart. It points us to Christ. It exposes our need for grace. And it provides a beautiful picture of the life that the Holy Spirit is seeking to produce within us. The Law cannot save us. Only Christ can do that. But the Law can teach us to recognize the likeness of Christ as the Spirit forms Him within us. And that is a pursuit worthy of a lifetime.