Thomas Brooks emphasizes the sweet nature of grace, describing it as a source of immense joy and a refuge against life's troubles. He illustrates grace as a nourishing force, likening it to sweet spices, wine, and milk, and highlights its role in enhancing our spiritual services, making them pleasing to God. Grace is portrayed as essential for the soul, providing strength, healing, and guidance in our walk with Christ. Brooks also notes that grace transforms even the harshest natures into something beautiful and amiable, showcasing its power to change lives. However, he warns that grace can sometimes be overshadowed by an unrefined nature, much like a precious jewel in an unsuitable setting.

Thomas Brooks emphasizes that holy joy and godly sorrow coexist harmoniously in the life of a believer. He illustrates that a godly person often experiences deep sorrow for sin while simultaneously possessing profound joy in their relationship with God. This duality enriches the believer's spiritual life, as true joy is often rooted in the recognition of one's sinfulness and the grace of God. Brooks asserts that the heart that weeps for sin is the same heart that rejoices in God's mercy, highlighting the interconnectedness of grief and joy in the Christian experience.