We live in a time which gives precendence to emotions and feelings, 'lived experience' and how someone feels seems to trump any other argument, even in the absence of logic or reason. In such an environment, as Christians, it becomes even more important to understand truth, and the only way we can do this is to continually return to the Bible. We know that over the last few millenium the truths of the Bible have stood constant, where man has interpreted truth continually to suit the climate of the time. So a biblical response is one that returns to the Bible as its authority.
Clearly this means that the response must fit in with what the Bible says - the easiest way of demonstrating that is by reference to Bible verses, using them as evidence to support the argument / discussion. However, there will also be parts of a conversation which still come from a Bible perspective but may not directly reference the verses in each part of that discussion. In such examples we would expect the author to commonly use the Bible as core reference, and for the specific discussion or argument to still fit in with Bible truths.
Where possible we pull out from a discussion any Bible verses so that they can be easily accessed alongside the responses, showing that ultimately this is the starting point for a response and the core on which any arguments are built.