(Rom 8:29) “For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.” Notice the Lord Jesus is the firstborn meaning that we who follow the cross and resurrection are the brethren. This “did not” occur before Pentecost. Those in the Old Testament were not “saved” as we know it, born again being sealed with the Holy Spirit.