If you believe in God, and Creation ...not evolution, then you tend to believe in the standards clearly written in the Bible.

But, you also need to understand the basic reasons behind why the Old Testament and the New Testament have different ways at times.  

It would take me a long time to list all of the differences ...even longer to understand them myself, and longer still to explain it to you.  

But, you probably have already come across certain ones that have concerned you. 

You can start there.

And you can pray that the Holy Spirit explain it to you.

Two things that come to mind immediately, are things that may buffer our understanding of what the Holy Spirit would be telling us.

• Our own pride ...mixing in our feelings as we look for answers to suffice what we'd like life to be.
• Insincerity ...not wanting to really find an answer to something we perhaps feel we aren't going to agree with.