T. Austin-Sparks emphasizes that God's purpose for His people goes beyond their current state, as illustrated by the story of Zacharias and Elisabeth. Despite their faithful service, God had a greater plan that required them to be open to His new work, represented by the coming of John the Baptist. The sermon warns against spiritual pride and the dangers of relying solely on established traditions, which can obstruct God's new movements. Sparks encourages believers to trust in God's ability to act beyond human understanding and to remain pliable to His will, lest they lose their testimony. Ultimately, the message calls for a deeper faith that embraces God's full purpose, even when it challenges conventional wisdom.