If you study the Old Testament and the whole Bible one thing becomes apparent: there is something for everyone in there, which sounds good on paper. But the fact is you can prove or disprove pretty much ANY CONCEPT using scripture. In history it has been suborned to defend the most heinous attitudes.
So arriving at a positive morality or any sense of the truth is a little difficult, except for one thing. The Holy Spirit. If you have Jesus' Ghost in your heart she can lead you to any and all truth - if you're open to it. The main trick is to distinguish this from church teachings. Sometimes those are right and sometimes not, but they don't pertain to you personally and this is always personal.
I cannot brain today. I have the dumb.