I did. Adam & Eve rebelled against God in the garden, He had to change some things. The short of it is, virtually the entire Old Testament is a history lesson pointing out that, no matter how hard he/she tries, mankind will always fall short of God's commandments and laws....and sacrifices for sin. Also within the Old Testament, though, is the foretelling of Jesus, who would come to earth, live the perfect life none of us could, then take on all the sin sacrifices for all mankind, then and evermore. It was a gift to us. A free gift.....only received through faith in Him. It then becomes a "relationship" not "religion", which is nothing more than checking off a list of rules and regulations. Oh, God's standards/absolutes still apply, but Christ is now there as my advocate...though His Holy Spirit who resides with in me. It's the coolest thing in the world!
In regards to your comment, though, here's one piece of Scripture which is helpful to me....