After all, the Bible as a whole forms not a constitution but a narrative.
Stories are beautiful things. They draw us into their world and have the potential to convey experiences. This transmission leads us in turn to partake of these experiences.
Stories thus preclude abstraction. It is somewhat unnatural to spin a story into an abstract esotericism.
None of this is to say that drawing principles from the Bible is necessarily bad. However maybe we need more care and humility; care that we do not profane the beauty of the narrative with constitutional exegesis, and humility so that we do not think our principles to be as inspired as the narrative (we can always be wrong).
Of course there are parts of the Bible that are more given to the derivation of principles – proverbs, the epistles – though is it not also true that such texts find their place in the larger narrative of God’s action in history, much like a monologue in a movie.
Perhaps we should worry less about drawing principles from the Bible, which are almost always altered by our worldview as they pass from the text to current reality. Perhaps we should worry more about letting the narrative of the Bible draw us into its world, so they we might partake of its reality and bring this experience to bear on our world.