I fear that there are a great number of theologians - evangelicals - who want to turn Christianity into a Jewish sect. Let me explain...
Before Felix, Paul says:
I worship the God of our fathers as a follower of the Way, which they call a sect. I believe everything that agrees with the Law and that is written in the Prophets (Acts 24:14).
Paul's opponents want to understand him as part of a Jewish sect. Paul rejects that understanding. He follows the Way. The Ancient Way - the Way of the Law and the Prophets.
In front of Agrippa, Paul unpacks a couple of things from that quote. First he shows what a sect is.
...according to the strictest sect of our religion, I lived as a Pharisee. (Acts 26:5)
This is what Paul means by sect: a small part of a greater whole (in modern usage it has the added meaning of a part that claims to be the whole.)
Pharisaism is a good example of a sect within Judaism.
But Paul insists, Christianity is not a sect within some broader category of messianically-ambivalent-Jewish-religion. Christianity is not a smaller, more specific kind of Judaism that just happens to follow the Messiah. It is the Way. The Way of the fathers, the Way of the law and the prophets. The Way it's always been.
How can Paul say this? Well, Paul simply explains what the law and the prophets have always testified:
I am saying nothing beyond what the prophets and Moses said would happen-- that the Christ would suffer and, as the first to rise from the dead, would proclaim light to his own people and to the Gentiles." (Acts 26:22-23)
This is Christianity - the Ancient Way. The Way of Moses and the prophets. Paul does not follow a sect within a larger entity called Judaism. He follows the suffering, rising and reigning Christ - just as the fathers did. You cannot and must not understand Christianity as a smaller part of a broader Scriptural story, for then you misunderstand the law and the prophets themselves.
Paul says explicitly that he has not put a Christian gloss on a pre-existing sub-messianic revelation. He is simply following the Way of Moses.
If someone does not follow the suffering, rising, reigning Christ they are not following the Way of Moses. And, note well, this is NOT a new state of affairs according to Paul. This is not Paul reading messianic meaning into Moses. Paul is saying nothing beyond the original meaning and intention of the prophets and Moses.
Anyone, in any age, who is not trusting in the promised Messiah is not part of the Way. They are the sect.
That's Paul's understanding.
And yet how often do we hear - from evangelicals - that Paul retrospectively awards messianic meaning to Moses!? In direct contradiction to his plain words here!
How common to hear that the law and the prophets were originally non-messianic!?
How common to hear that Moses would not have understood the Way in his own day? That, practically speaking, his beliefs would have matched up far more with a non-messianic Jew than with Paul!
That, essentially, the OT in its own context does belong in the synagogue, but the NT has audaciously re-interpreted it.
And what does this imply? It implies that Christianity is a sect within Judaism. A true sect. A divinely authorized sect. But a sect.
I tell you, we are not a sect. We are the Way. The Ancient Way. And there has never been any other.