So are you really saying that the Bible is just a series of subjective accounts of something that happened and therefore not necessarily true in any objective sense? These are just what people thought they saw or heard as best they can remember it years later when they wrote it down.
NO.
It is a subjective account of an objective truth.
Does this imply that the revisions of the Bible down through history are also just subjective accounts of someone's experiences derived from reading someone's subjective account of something that happened hundreds or thousands of years ago?
Correct.
How does one give any credibility that kind of conglomeration of stuff?
Through the operation of the reasoning faculty - specifically - hermeneutics.
Has the "single, immutable truth" been lost in translation? If not what is it, please?
That we, and the universe we live in, is CREATED.