"Doctrine of the Will" by Asa Mahan is a theological and philosophical treatise written in the mid-19th century. The work delves into the nature of human will, exploring the fundamental concepts of liberty and necessity while engaging with various philosophical schools of thought. Mahan aims to articulate a doctrine that aligns with both psychological understanding and biblical teachings regarding moral capability and obligation. The opening of the treatise begins with a dedicatory preface, where Mahan emphasizes the importance of understanding the doctrine of the will as it serves as a central theme in both mental philosophy and theology. He outlines the methodology he intends to adopt, advocating for a careful psychological inquiry into the nature of the will, free from the biases of preconceived theological systems. Mahan asserts that the interrelationship between human volition, divine governance, and moral responsibility is critical for comprehending one's character and duties as a moral agent. He argues for a distinct understanding of liberty versus necessity, setting the stage for the detailed examinations and arguments that follow in the subsequent chapters. (This is an automatically generated summary.)