The problem there is that a religious text loses its authority if it’s full of demonstrably incorrect statements. Falsus in uno, falsus in omnibus.
Once you’ve decided that you can just ignore anything that looks wrong, the Bible stops being a source of truth and becomes a Rorschach ink blot for you to see whatever you want in it.
The swallow may fly south with the sun, or the house-martin or the plumber may seek warmer climes in winter; yet these are not strangers to our land.