But it was a decision of the Church (in part later neglected by Luther) to incorporate certain books into the Christian Bible. Further, the Church interpreted the Old Testament in the light of Christ. A Christian now reads the Old Testament with the eye of the Church, -- just talk to anyone Jewish and see how far you get agreeing on anything.
Claiming that the writers of Scripture were by default Catholics is only a tactic used to justify the Catholic church's power grab
That is not the claim though. Giordano Bruno was Catholic; Luther was Catholic for most of their lives. Just being a "default Catholic" does not guarantee anything. The Church as a whole -- not merely the four Evangelists and other authors, -- did the arduous work of selecting these particular writings from many other writings. It was done in council based on the criteria of canonicity established by the Church. Further, the teaching of the Church then and now is in complete harmony with the New Testament, whereas the teachings of every sect from the Arians to the Protestants contradicts the scripture in the major points of their doctrines. That is because the New Testament came from the bosom of the Church; it reflects her very essence.
“the Church” in annalexology is the Catholic Church. But the comparison of the actions of the Catholic Church to “the Church” reveal no similarity. for example the williness to approve torture. Christian teaching or Catholic teaching?
The New Testament canon needed no Catholic council to establish it.