The central message of this sermon is that God's goal remains constant - to bring glory to Himself by working salvation in the midst of sin - but His methods and approach can change. The event described in Acts 2, where the Holy Spirit is poured out on believers in Jerusalem, marking the beginning of the church, is a pivotal moment in this process. It represents a fundamental shift in how God brings about His goal, transitioning from working through one nation (Israel) to working through a global organism (the church), which transcends national and linguistic boundaries. This change is not a departure from God's original plan but rather an adaptation of His methods to more effectively reach the world with the gospel. The sermon emphasizes that being baptized with the Holy Spirit, as seen in Acts 2, occurs at salvation, while being filled with the Holy Spirit is a ongoing experience that ebbs and flows throughout one's Christian life. Ultimately, this message advances the belief that God is adaptable and resourceful in His pursuit of redemption, using diverse means to achieve His ultimate goal of bringing glory to Himself through saving humanity.