Herran Kansan Pyh? Sota, Epistolasaarnoja, also known as Uusi Postilla, is a collection of epistolary sermons by Pietari Kurvinen, written in Finnish. This work delves into profound theological themes, providing insightful commentary and interpretations. Kurvinen's sermons offer guidance and spiritual nourishment, reflecting the core tenets of Lutheran Christianity and appealing to those seeking a deeper understanding of their faith.