Brian Rhodus discusses the contrast between the Pentagon, symbolizing worldly power, and Pentecost, representing spiritual power. He highlights the Pentagon's impressive dimensions and operations, emphasizing its role in U.S. defense. Rhodus then shifts to Acts 3:1-10, where Peter and John heal a lame man, demonstrating the power of the Holy Spirit. He stresses that this healing is the first miracle post-Pentecost, affirming Jesus' promises. Rhodus underscores the importance of using the Holy Spirit's power for God's work, worship, and witness, urging the congregation to actively serve and share their faith.