My point is that the Protestants have only taken away from Scripture.

There had been debate about the canonicity of these particular books because they are "Old Testament" books but not recognized by the Jews as part of their Scripture. They were, however, included in the Septuagint when the Hebrew Bible was translated into Greek in roughly 300 BC in Alexandria. As a result, they were included in the Bible because when it was "compiled" (actually the result of common acceptance, with some minor changes, of a list that was originally sent out by Athanasius, bishop of Alexandria, of the New Testament, with the Septuagint tacked on) it was part of the Septuagint and that was taken as the "Hebrew scriptures".

As a result, the Protestants just jettisoned the books that they thought never should have been put in. As to how the books got put in originally, the Old Testament is the result of Jewish scholars over the years choosing by means unknown to us and the New Testament was, as I said, largely the result of what Athanasius had said.