James M. Hamilton, Jr., God’s Glory in Salvation through Judgment: A Biblical Theology (Crossway, 2010), 512–­513:

Is there a theme that dominates Paul’s thought? Is there a big idea that organizes all the other themes and ideas that are so powerfully and flexibly deployed in pursuit of the Great Commission task of making disciples by building churches? With so many unique situations addressed by these letters from the apostle, does the theology reflected in these letters have a center? …

I am in basic agreement with [Thomas] Schreiner’s proposal that God’s glory in Christ is central to Paul’s theology. As will be clear from my analysis of Paul’s letters, it seems to me that at the very heart of God’s glory in Christ, the big muscle that pumps the blood through the living body of his thought, is the manifestation of the mercy and justice of God, with mercy magnified by justice.