A recent volume provides another “hidden contribution to Pastorals scholarship“:
Berry, Everett. They Who Endure to the End: A Primer on Perseverence. Eugene, OR: Wipf & Stock, 2020.
The volume includes a biblical-theological treatment of perseverance, followed by an historical-theological discussion of the topic. In his chapter on “Perseverance in the Letters of Paul,” Berry provides a seven-page discussion of “Perseverance in the Pastoral Epistles” (pp. 75-81).