As Dr. Uenuma and Dr. Chiba explain, the key to understanding the Apostle Paul’s articulation of Christian doctrine is understanding Romans 3:21-31. 

Unlocking All of Scripture

Unlocking the mysteries of this passage unlocks the rest of the New Testament, and, in turn, all of Scripture. This is why these scholars have invested so much time and effort to study this passage and share these insights.  See the full discussion here: https://www.youtube.com/watch?v=aMirj_tJOAM

Note: The new translation of Romans 3:21-26 is available in the Introduction and 'Proposal and Theses.