F.B. Meyer delivers a poignant sermon on the dangers of despising one's spiritual birthright, using the examples of Esau and Saul to illustrate how yielding to temptation and partial obedience can lead to being cast away from God's service. He emphasizes the importance of self-examination and the need for believers to confront their appetites and hidden sins that may hinder their relationship with God. Meyer urges the congregation to seek God's forgiveness and restoration, warning that even those in ministry can become castaways if they do not fully surrender to God's will. He calls for a deep introspection to ensure that one's life is not choked by unconfessed sin, which can block the flow of God's grace. Ultimately, Meyer encourages a return to fervent prayer and reliance on the Holy Spirit to avoid the fate of being a castaway.