There are many hot potato issues, or "grey areas", that we have to deal with as Christians. The Bible is clear on the essential truths. Once we have those unified, why would we quarrel with one another on the non-essentials? Let us be unified in the essentials, maintain biblical liberty to act according to our consciences for non-essentials, and always keep a close eye on what we are doing (assiduity) so that we are honouring God!