Biblical interpretation is sometimes difficult. I hope to one day write about it at length, but until then let me offer one word of caution that could save you countless errors: study every verse on the matter.
If you truly want to know what God thinks about something then you will eventually find it necessary to devour all the verses on that topic. We are so quick to give our opinions about any belief, doctrine, or idea, but why? If there are entire biblical passages that you have yet to study in regard to a certain category then proceed with humility, not authority.
Studying every verse on a matter can be exhausting, but being wrong and leading others astray is even more taxing. I am unaware of a study path that leads to complete truth, but this one is not far from that mythical trail.