Christianity is NOT Derived From Judaism

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Wick Stick

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As I understand Romans 11, the Root is Jesus. Israel and Judah and Christianity are all branches attached to that Root.

I agree with the statement at the head of this topic - Christianity is NOT derived from Judaism. Historically, "Judaism" indicates the Pharisee's practice of observing the Law of Moses. Christianity does not observe the Law of Moses, and is not built on that covenant.

I think some of the statements made after the title go too far. Christianity is not unrelated to Israel; the two have great intersection.

I find that the Church is a re-constitution of Israel (not Judah), built on the covenant mediated by Abraham, rather than the one mediated by Moses.
 

Soyeong

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Lots of problems with this and coming from the Old Testament no less. I had Grok pin down my first one coming from the details of circumcision no less. Just not having no circumcision for Passover is a big deal no less, besides all the other stuff it did if we are going to be picky about being "Biblical", and doing so when the New Testament is in it's earliest stages of infancy being but a tiny fetus in the womb no less! Acts 15 just on circumcision makes sense that no festivals are required, like the precedents that eventually led to "Noahism" in later Talmudic Judaism.

(Grok writing to me on a detailed inquiry)

Here’s a focused, detailed breakdown you can use as the first major item in your reply. Circumcision is not a minor ritual that Acts 15 simply “hand-waves.” In the Old Testament it is the covenant sign, a boundary marker for the people, a requirement for Passover, and tied to access to sacred space.

Core Old Testament Commandments on Circumcision​

1. Genesis 17:9–14 (the foundational text) God establishes circumcision as the sign of the everlasting covenant with Abraham and his offspring:
  • Every male among you shall be circumcised.
  • It is the token/sign of the covenant between God and them.
  • Eighth day for those born in the household.
  • Includes home-born slaves and those bought with money from foreigners.
  • The uncircumcised male “shall be cut off from his people; he has broken My covenant.”
This is not optional or secondary. Failure brings karet (being cut off from the covenant people). The covenant is marked “in your flesh as an everlasting pact.”

2. Leviticus 12:3 In the context of purification after childbirth: “On the eighth day the flesh of his foreskin shall be circumcised.” This simply restates and embeds the Genesis command into the ongoing life of Israel under the Law of Moses.
3. Exodus 12:43–49 (Passover regulations) This is the critical link to the festivals:
  • No foreigner may eat the Passover.
  • A slave bought with money may eat after he is circumcised.
  • A sojourner or hired servant may not.
  • If a stranger sojourns among you and wants to keep the Passover to the Lord, “let all his males be circumcised, and then let him come near and keep it; and he shall be as a native of the land. But no uncircumcised person shall eat of it.
  • One law for the native-born and the stranger.
Circumcision is the explicit gateway to eating the Passover lamb. No circumcision = barred from the central covenant meal that commemorates redemption.
4. Joshua 5:2–9 Before Israel celebrates Passover in the land, Joshua circumcises the entire wilderness generation that had not been circumcised. The place is named Gilgal because the Lord “rolled away the reproach of Egypt.” Circumcision is treated as necessary preparation for proper covenant life and Passover in the promised land.
5. Exodus 4:24–26 God seeks to kill Moses; Zipporah circumcises their son and the threat is averted. The narrative underscores how seriously neglect of the sign is taken.

What else does circumcision do?​

  • Covenant membership marker: It is the physical sign that distinguishes the covenant people. Being uncircumcised puts one outside the people (Gen 17:14).
  • Passover access: Explicitly required (Ex 12). This is not a minor detail. Passover is one of the three pilgrimage festivals and the foundational redemption meal.
  • Temple / sanctuary access: Ezekiel 44:7–9 is direct. God condemns Israel for bringing foreigners who are “uncircumcised in heart and flesh” into His sanctuary, calling it an abomination that breaks the covenant and defiles the temple. The rule is stated: “No foreigner uncircumcised in heart and flesh shall enter My sanctuary.” In Second Temple practice this played out spatially: the Court of the Israelites was for circumcised Jewish males; uncircumcised men remained in the outer Court of the Gentiles.
Heart circumcision language (Deut 10:16; 30:6; Jer 4:4; 9:25–26) exists, but it does not cancel the physical requirement in the texts above. The physical sign remains obligatory under the old covenant administration.

Why this matters against Soyeong’s framing​

Acts 15 does not treat circumcision as a temporary or progressive “starter” item that Gentiles will later adopt. The council, with the Holy Spirit, decides that circumcision is not to be required of Gentile believers. The four stipulations are the decision; they do not include circumcision, and the letter does not present the four as incomplete.
If circumcision is the covenant sign, the gateway to Passover, and tied to sanctuary access, then removing the requirement for Gentiles has structural consequences. You cannot keep the full Torah-observance system intact for Gentile believers once the foundational boundary marker has been set aside by apostolic authority. Claiming that Acts 15 only settled “salvation by circumcision” while leaving the rest of the Torah binding for Gentiles does not solve the problem—Passover and temple participation are precisely where the Torah itself makes circumcision non-negotiable.
This is the devil in the details. Circumcision is not a side issue that can be bracketed off while festivals and other commandments remain binding in the same way. The Old Testament itself binds them together.


Pavel Note In the Near Eastern cultural background of the Old Testament, circumcision carried additional resonance with Israel’s calling to be “a kingdom of priests and a holy nation” (Exodus 19:6).


Some ancient sources and modern scholarship note that circumcision was practiced in Egypt and appears to have held particular significance among priestly (and in some periods royal) circles, often linked to ritual purity and initiation into sacred service. Herodotus, writing in the fifth century BC, already associated the practice strongly with the Egyptians and noted its connection to their religious concerns for cleanliness. In certain Egyptian contexts it seems to have functioned more as an elite or priestly marker.


Against that backdrop, the biblical application of circumcision to every male in Israel is striking: the covenant sign is given to the whole people, not reserved for a priestly caste. This fits the vocation announced in Exodus 19:6—Israel as a kingdom of priests—rather than a system in which only a specialized group bears the mark of consecration.

Pavel Note In the Near Eastern cultural background of the Old Testament, circumcision carried additional resonance with Israel’s calling to be “a kingdom of priests and a holy nation” (Exodus 19:6).

Some ancient sources and modern scholarship note that circumcision was practiced in Egypt and appears to have held particular significance among priestly (and in some periods royal) circles, often linked to ritual purity and initiation into sacred service. Herodotus, writing in the fifth century BC, already associated the practice strongly with the Egyptians and noted its connection to their religious concerns for cleanliness. In certain Egyptian contexts it seems to have functioned more as an elite or priestly marker.

Against that backdrop, the biblical application of circumcision to every male in Israel is striking: the covenant sign is given to the whole people, not reserved for a priestly caste. This fits the vocation announced in Exodus 19:6—Israel as a kingdom of priests—rather than a system in which only a specialized group bears the mark of consecration.
It is important to recognize that a servant of God can speak against obeying what God has commanded for an incorrect reason without speaking against obeying what God has commanded. God commanded circumcision for the reasons that you detailed but He did not command circumcision in order to become saved as the result. The Jerusalem Council did not rule that Gentiles are not required to become circumcised but only ruled that Gentiles are not required to become circumcised in order to become saved as the result.

Either Acts 15:19-21 contains an exhaustive list for mature believers or it does not, so it is contradictory to treat it as being an exhaustive list in order to limit which ways Gentiles should follow what Christ taught while also treating it as being a non-exhaustive list by taking the position that there are obviously other ways that Gentiles should follow Christ. So are you taking the position that it is an exhaustive list or a non-exhaustive list?

In Deuteronomy 13, the way that God instructed to determine that someone is a false prophet is if they speak against obeying the Torah, so if you agree that the Jerusalem Council were servants of God, then you should be opposed to you interpreting them as speaking against obeying the Torah, and if you think that the Jerusalem Council should be interpreted as speaking against obeying the Torah, then you should be opposed to you considering them to be servants of God, but either way followers of Christ should follow the example of obedience to the Torah that he set for his followers to follow.
 

Lambano

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As I understand Romans 11, the Root is Jesus. Israel and Judah and Christianity are all branches attached to that Root.
I would agree with that with the understanding the root is Israel, and Messiah Jesus is the personification of Israel. I would justify the concept of Jesus-as-the-embodiment-of-Israel from the Servant Songs of Isaiah 49-53, especially Isaiah 53.

I agree with the statement at the head of this topic - Christianity is NOT derived from Judaism. Historically, "Judaism" indicates the Pharisee's practice of observing the Law of Moses. Christianity does not observe the Law of Moses, and is not built on that covenant.

I would counter that the Christian concept of "New Covenant" is itself derived from Judaism and God's covenant with Israel. See Jeremiah 31:31-34.
 

Wick Stick

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I would agree with that with the understanding the root is Israel, and Messiah Jesus is the personification of Israel. I would justify the concept of Jesus-as-the-embodiment-of-Israel from the Servant Songs of Isaiah 49-53, especially Isaiah 53.
Agree? That isn't quite what I said.

There's a metaphor of "trees = emperors" that runs through the whole Bible. The clearest example comes from Ezekiel, where the Assyrian king is "the tallest tree in Eden" and his people are envisioned taking refuge under his branches. There are several.

This is true of Jesus as well. He is the root of David, the True Vine, the BRANCH.

So, when Paul talks of a Tree, he's picking up an established meme. That meme demands that we view the tree as a king/emperor. Where he modifies the established metaphor is in making it so that we are attached to Him as branches. That puts us in a position of participating in His rule.
I would counter that the Christian concept of "New Covenant" is itself derived from Judaism and God's covenant with Israel. See Jeremiah 31:31-34.
Those verses make my point very well:

31 Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah: 32 Not according to the covenant that I made with their fathers in the day [that] I took them by the hand to bring them out of the land of Egypt; which my covenant they brake, although I was an husband unto them, saith the LORD:

Jeremiah doesn't announce a continuation of Moses' covenant, but a NEW covenant. Jeremiah's New Covenant isn't derived from Judaism either... again defining Judaism as observing Moses' Law and covenant.

It is instead based on Abraham's covenant. I would not call that Judaism. That pre-dates Judaism.