I agree with Russ. The Bible is generally very clear about what is right/wrong behaviour. There are lots of "shades" of behavioural differences because a lot of self-claimed Christians don't like the rules so they deviate under the basis of "we're saved anyway so it doesn't matter".

But the Bible doesn't tell us everything about how to live and we're left to make some decisions for ourselves i.e. whether to use birth control or not.