In the past I have attempted to read the Bible multiple times and always came away very confused as well. I believe the key to understanding the Bible is found in 2 Tim 2:15 “Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.”
When I learned to rightly divide the word of truth the Bible opened up and I was able to understand it in a way like never before. The church today, the body of Christ, was a mystery hid in God from the foundation of the earth (“Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,”
Romans 16:25 KJV) and God selected Saul of Tarsus whom you may know as the Apostle Paul, to build the body of Christ.