The Bible is holistic. Every verse must be understood in the context of the entire Bible. Simply citing verses (out of context and ignoring centuries of theological interpretation by church fathers) can lead to misunderstanding.
I've heard stories of non-denominational Christian couples arguing about mundane household matters, each armed with a Bible, frantically seeking verses to support their claim as to how to divvy up chores, or how money should be spent, or who should decide.
"Demand for Perfection" Fallacy!
At least providing exact quotations is better than providing absolutely none at all, and instead just saying, "Well, it's somewhere in the Bible!"
Regards,