John Nelson Darby reflects on the Book of 1 Samuel, emphasizing God's sovereignty and grace in the face of Israel's failures. He discusses how God provided Samuel as a prophet when the priesthood failed, and how the introduction of kingship marked a shift in Israel's relationship with God. The sermon highlights the contrast between Saul's disobedience and David's faithfulness, illustrating the consequences of rejecting God's authority. Darby notes that despite Israel's desolation, God's grace remains evident in His plans for David and the future of His people.