What has helped me to understand the OT is to do as Paul tells Timothy(2 Tim 2:15), . .to rightly divide the word of truth. Which means, we need to separate what was said, to whom it was spoken to, during what circumstance and at what time.
Though all scripture is for our learning and understanding, not all scripture is for us. Romans 15:4
Once we come to understand what is meant for us, which are all of Pauls epistles. . Romans thru Philemon, we will not be confused or fearful because Paul teaches to us believers in the Body of Christ. Paul was made the Apostle to the Gentiles to preach the gospel of grace which someone on here touched on in the first page.
God said that every creature is good to eat, if received with thanksgiving. 1 Timothy 4:4.
We don't follow what God put in place for Israel. That's where churches get their rules and regulations. We are NOT under the LAW, but UNDER GRACE. And we are under the dispensation of grace as our risen Lord gave Paul many revelations pertaining to believers. It would behoove us to study his epistles and understand clearly what the bible says.
I know for me, when I came to understand this, it has made reading the bible so easy now. I know what is for me and what is not. . and what is just for my understanding.