The paradigm where all believers in Christ are members of the body of Christ, whether they are Jew or Gentile, which is the point Paul was making in 1 Corinthians 12.
I am asking the following hoping you think on them a bit more.
By all Believers, do you mean James; Cephas; John; and theirs - and what applied to them?
Passages like...
Matthew 24:20 But pray ye that your flight be not in the winter,
neither on the sabbath day:
Matthew 24:40 Then shall two be in the field;
the one shall be taken, and the other left.
Acts 3:23 And it shall come to pass, that every soul, which will not hear that prophet,
shall be destroyed from among the people. 3:24 Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days.
There were those Jews "an Israelite indeed" John 1:47, and there were those Jews in the Body.
In other words, there were two different sets of Believing Jews. Those in the Israel of God, and those in the Body of Christ.
In the following, we read of both kinds of Jews.
Acts 21:18 And the day following Paul went in with us unto James; and all the elders were present. 21:19 And when he had saluted them, he declared particularly what things God had wrought among the Gentiles by his ministry. 21:20 And when they heard it, they glorified the Lord, and said unto him, Thou seest, brother, how many thousands of Jews there are which believe; and they are all zealous of the law:
Here is the other set of Believing Jews.
Acts 21:21 And they are informed of thee, that thou teachest all the Jews which are among the Gentiles to forsake Moses, saying that they ought not to circumcise their children, neither to walk after the customs.
And Gentile Body Members with that second set of Jews.
Acts 21:25 As touching the Gentiles which believe, we have written and concluded that they observe no such thing, save only that they keep themselves from things offered to idols, and from blood, and from strangled, and from fornication.
Every paradigm has a context marker.
Where its' particular context begins and where it ends or cuts off.
Here those two distinct groups are mentioned once more...
Galatians 2:1 Then fourteen years after I went up again to Jerusalem with Barnabas, and took Titus with me also. 2:2 And I went up by revelation, and communicated unto them that gospel which I preach among the Gentiles, but privately to them which were of reputation, lest by any means I should run, or had run, in vain.
Galatians 2:6 But of these who seemed to be somewhat, (whatsoever they were, it maketh no matter to me: God accepteth no man's person: ) for they who seemed to be somewhat in conference added nothing to me: 2:7 But contrariwise, when they saw that the gospel of the uncircumcision was committed unto me, as the gospel of the circumcision was unto Peter; 2:8 (For he that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles: ) 2:9 And when James, Cephas, and John, who seemed to be pillars, perceived the grace that was given unto me, they gave to me and Barnabas the right hands of fellowship; that we should go unto the heathen, and they unto the circumcision.
Galatians 6:16 And as many as walk according to this rule, peace be on them, and mercy, and upon the Israel of God.
Compare those last two sections of passages with Acts 15 and what you find is that...
On a prior trip to Jerusalem, Paul found he had run in vain. That he'd tried relating his Gentile gospel with some at Jerusalem to no avail. While in his return trip he dealt with their leadership, lest he waste his time once more.
You also find that they settled issues that are once more a source of strife between both groups at Galatia, thus; Paul's ending words, there at the end of Galatians 6.
There is a paradigm all this begins to make clear to the eyes of one's understanding that few have yet seen.
Especially anyone who OVER RELIES on the books or writings of men who; it is crystal clear in their writings; failed to see said paradigm...miserably so.
This is why the sound bytes back and fourth is so often a waste of time - one's paradigm automatically shifts in order to embrace or reject what it hears and or reads according to whether or not it conforms with one's paradigm.
UNLESS a HIGHER level Paradigm is in place FIRST.
The Higher Level Three Part Paradigm the following passages describe...
Acts 17:11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so. 17:12 Therefore many of them believed; also of honourable women which were Greeks, and of men, not a few.
Take a look at how many on TOL replace those Three Critical Steps with "well the ECF," and or this and that endless stream of books "about" and or one's own ideas.