1 and 2 Timothy and Titus is the first commentary from the Christ-Centered Commentary Series is now for sale on Amazon. It looks like this volume is written by the series editors David Platt, Danny Akin, and Tony Merida. This commentary series niche is to take large key verses within large chunks of texts and show how they apply to Christ. If you are looking for a commentary that gives you big-picture, Christological landscapes of whole books give this series your attention.