Watchman Nee emphasizes the significance of a committed life through the example of Abraham, who was called by God during a time of great moral decline. God revealed Himself to Abraham, sharing His plans and establishing a covenant that included a land and a people to bear witness to His glory. The sermon highlights the importance of building altars in our lives, representing our commitment to God, and the necessity of fellowship within the Church as a reflection of the Body of Christ. Nee stresses that true knowledge and strength come from a shared life in Christ, rather than mere information or individualism. Ultimately, the message calls believers to recognize their role as witnesses in the world, rooted in the life and strength that comes from God.