Let me speak in a parable style for you.
If we know that the earth rotates and makes the sun appear to rise and set, and we know that if the earth stops rotating the laws of the universe have stopped operating and there will be catastrophic tsunamis etc (the earth spins at a 1000 miles an hour, if it stops suddenly - all that water will continue to travel at that speed, for example).
Now if, say, some story in a book is presented that one day in the past - someone was engaged in a military siege and to help the attacking army the earth stopped rotating to allow enough daylight for the battle to continue.. we'd have a choice.
The choice would be to take the story literally, or to interpret it based on what we know to be true about the earth rotating.
In my case the clear principle is 'God does not do illogical things' another is 'God is one and unique, and the sole creator'.
Your principle could be 'the verses which back up Pauline Christianity are true, the others need to be ignored or explained away'
Speaking hypothetically, of course.
Cheers,
Shafique