title = {}}, url = {https://www.amazon.com/Luther-Vocation-Gustaf-Wingren/dp/1592445616}, author = {Wingren, Gustaf}, keywords = {History, Theology},
title = {Wholly {Citizens}: {God}‘s {Two} {Realms} and {Christian} {Engagement} with the {World}}, url = {https://www.amazon.com/Wholly-Citizens-Realms-Christian-Engagement/dp/1506420354}, author = {Biermann, Joel D.}, keywords = {Theology, Discipleship},