The Bible is not a single volume but a collection/anthology of writings put together over many centuries. Further, the canon of scripture was decided after several hundred years after the writing of the most recent book (Revelation). Which is all to say that the Bible, at least in the cited references, cannot be self-referential because “the Bible” didn’t exist at the times of those references. They were all individual writings. So Revelation, for instance, is referring to the words of the prophecy contained in Revelation, NOT the Bible.