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Oct 5, 2017

Why Do We Have to Follow Some Biblical Laws and Not Others?

John Harden

While preparing for the sacrament of penance you may reflect on the Ten Commandments as part of your examination of conscience: “Have I taken the Lord’s name in vain? Have I stolen? Have I coveted or envied other’s things?” etcetera. It’s not likely that you reflect on the kosher laws found in the Old Testament: “Am I circumcised? Have I eaten pork or lobster? Have I worn a blended fabric?” etcetera. Why are the Ten Commandments (found in Exodus 20 and Deuteronomy 5) still binding for us as Christians, while the dietary and ceremonial laws found in those same books are not? An understanding of the biblical history of these laws will help to answer this question.


Abraham, I Said “Cut It Out”

The first of these laws was given to Abraham. We honor Abraham as a patriarch and Old Testament saint, but this doesn’t mean he was perfect. Like many saints, Abraham had a rocky start, disobeying God on more than one occasion. Here’s a few examples:

  1. He was asked to leave his family and go to the Promised Land. He left his land, but he took his nephew Lot with him. He even takes a number of other persons and possessions (see Genesis 12:1–4).
  2. He was deceptive about Sarai being his wife, and she in turn was taken to be the wife of Pharaoh (see Genesis 12:10–20).
  3. He grew impatient after God promised him a son to be his heir, and he ended-up sleeping with Sarai’s maid Hagar, who bore him Ishmael (see Genesis 16).

In all of these instances, we see doubt in Abraham. He doubts that the Lord will bless and protect him, and he takes it upon himself to acquire what the Lord has promised to give him. Sleeping with Hagar must have been the final straw. At that point, God issues a new command to Abraham, “Every male among you shall be circumcised. You shall be circumcised in the flesh of your foreskins, and it shall be a sign of the covenant between me and you” (Genesis 17:10-12).

Ouch. Was that really necessary? Couldn’t he have gotten a tattoo, or something that would have been just as permanent but would have left him intact? Think about it though. If Abraham was to be the father of God’s chosen people, then this chosen people had to be different than other nations. Circumcision makes this difference clear. It is the sign of the covenant between God and Abraham—a sign that marks the very organ necessary for men to procreate. Sealed with this sign, Abraham would conceive Isaac, the father of Jacob (who is later renamed Israel).

So the command to be circumcised was given as a sign to mark a person as a son of Abraham, as one of God’s chosen people. His offspring, conceived with this covenant sign, were to be marked in the same way. So why are we no longer required to be circumcised? And what about those other Old Testament dietary laws?


Like Abraham, Israel was not perfect. There are many times in its history when Israel falls short of their calling as God’s chosen people. One of the most striking instances is found in Exodus 32. In this chapter, Moses is on Mt. Sinai receiving the Law from God written on two tablets of stone. Meanwhile, the Israelites are at the base of the mountain plotting against God. There they coaxed Aaron into building a golden calf, which they then began to worship as their god.

Soon after, Moses came down from the mountain. “As he drew near the camp, he saw the calf and the dancing. Then Moses’ anger burned, and he threw the tablets down and broke them on the base of the mountain” (Exodus 32:19). It seems Israel was not quite ready to be God’s chosen people. Aaron describes their condition well, “The people are prone to evil” (Exodus 32:22). The LORD knows exactly what they need.

The Longest Time-Out in History

As a father, I sometimes have to create unique disciplinary measures to keep my kids out of trouble. One of the most effective methods is to place them in time-out or ground them. This separates them from the things that got them in trouble in the first place, and it gives them time to think about what they did wrong. The dietary and ceremonial laws of the Old Testament are actually a lot like that. They are designed to separate Israel from the pagan influences around them, and to remind Israel of who the LORD, the One True God, is. Like wayward teenagers, they are told not to hang-out with the other nations, who keep getting them into trouble: “Take care not to make a covenant with the inhabitants of the land that you are to enter; lest they become a snare among you” (Exodus 34:12).

To ensure Israel stays separated, God set down rules that made it all but impossible to be influenced by the other nations. They were not to eat like them (see Leviticus 11), nor look like them (see Leviticus 19), nor act like them, nor marry them (see Exodus 34:16). But these disciplinary laws were not meant to last forever. When Israel finally learned their lesson, they would no longer need these laws. This is exactly what Moses tells them:

When all these things, the blessing and the curse which I have set before you, come upon you, and you take them to heart … and return to the LORD, your God, obeying his voice, according to all that I am commanding you today, you and your children, with your whole heart and your whole being … The LORD, your God, will circumcise your hearts and the hearts of your descendants, so that you will love the LORD, your God, with your whole heart and your whole being, in order that you may live (Deuteronomy 30:1-2, 6, emphasis added).

With a change of heart, the Israelites who were “prone to evil” would no longer need the disciplinary measures meant to keep them out of trouble. As St. Paul explains, “Why, then, the law? It was added for transgressions, until the descendant came to whom the promise had been made … the law was our disciplinarian for Christ, that we might be justified by faith. But now that faith has come, we are no longer under a disciplinarian” (Galatians 3:19, 24-25).

How are we justified by faith? “Through faith you are all children of God in Christ Jesus. For all of you who were baptized into Christ have clothed yourselves with Christ. There is neither Jew nor Greek, there is neither slave nor free person, there is not male and female; for you are all one in Christ Jesus. And if you belong to Christ, then you are Abraham’s descendant, heirs according to the promise” (Galatians 3:26-29, emphasis added).

With the coming of Christ—and by being baptized into him—we have received from God the circumcision of heart for which Israel had been longing. Those who are baptized and have faith in Christ are no longer Jews, or Greeks, or Italians, or Germans—they are Christians. And, “in Christ Jesus, neither circumcision nor uncircumcision counts for anything, but only faith working through love” (Galatians 5:6, emphasis added).

This is why we are required to observe some biblical laws and not others. Circumcision and the ceremonial laws of Moses are fulfilled in Christ, who came not to “abolish the law or the prophets” but to fulfill them (see Matthew 5:17). The law and the prophets ask two things of us: “You shall love the Lord, your God, with all your heart, with all your soul, and with all your mind … You shall love your neighbor as yourself. The whole law and the prophets depend on these two commandments” (Matthew 22:37, 39-40, emphasis added). In other words, the law and the prophets are fulfilled by “faith working through love.”

Take a moment to reflect on what it means to be a son or daughter of God. What makes a person a child of the Father? Does our relationship with God depend upon performing a specific ritual, or is this relationship based on the way we act in our lives? Perhaps it’s both. How would someone know that you are a child of God?

Further Study

If you would like to learn more about this topic, I highly recommend the study Galatians: Set Free to Live by Jeff Cavins and Gayle Somers.

This article was first published on in two parts.

You May Also Like:

Why Follow the Rules When You Can Follow Your Heart?

Do Catholics Follow All Those Weird Old Testament Laws?

Does God Command Evil Acts in the Bible?

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  • The Sacraments are so significantly powerful in indicating the relationship between a human person and the Blessed Trinity, especially the Three Sacraments of Initiation.

  • I think this Bible verse is the one suitable for Roman Catholics:

    “For the time will come when people will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear.”

  • This is something that is still discussed in the Church up to today. The issue why Christians from the nations (gentiles) do not keep the dietary, ritual and ceremonial laws was settled at the Council in Jerusalem (Acts 15), where Peter, and the Apostles and Elders decided that Gentiles did not have to convert to Judaism to be saved. Therefore, Gentiles do not keep the things that Jews are commanded by God to do. On the other hand, it says nothing about Christian Jews having to stop keeping the dietary, ritual and ceremonial commandments given by God to them. In fact, the NT is peppered with details that the Christian Jews continued keeping these Jewish dietary, ritual and ceremonial laws, including the Apostles (Peter, Paul, James, Timothy, etc.). For example.- See Acts 21:20.
    In conclusion, Gentile Christians should not keep these dietary, ritual and ceremonial laws; while Christian Jews should keep them. Each one according to his calling in the Lord. Peace & Blessings.

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