"Plain Sermons, Preached at Archbishop Tenison's Chapel, Regent Street" by James Galloway Cowan is a collection of religious discourses written in the mid-19th century. The sermons delve into various aspects of Christian life and morality, addressing topics such as faith, the nature of service to God versus worldliness, and the importance of confession. Through practical and theological reflections, Cowan aims to guide his audience towards deeper spiritual understanding and commitment. At the start of the sermons, the first discourse titled "Taking Thought for Temporal Things" lays the groundwork for broader spiritual themes by emphasizing the conflict between serving God and material concerns, referred to as 'mammon.' Cowan elucidates that while practical preparations for life are necessary, excessive anxiety about worldly needs can lead to idolatry, diverting believers from their devotion to God. He provocatively questions the congregation, inviting them to reflect on their prioritization of faith amidst life's temporal demands, and sets a tone of introspection that is characteristic of the subsequent sermons in the collection. (This is an automatically generated summary.)