T. Austin-Sparks emphasizes the transformative experience of Isaiah's vision, which reveals the holiness of God and the prophet's own unworthiness, encapsulated in the three words: 'Woe!', 'Lo!', and 'Go!'. The sermon illustrates that true ministry arises from a deep awareness of one's sinfulness and the grace of God, leading to a divine commissioning to serve. Sparks highlights that the Church today must embrace this vision of the exalted Lord and fulfill its prophetic role in God's purpose. The call to 'Go!' is not merely a task but a response to God's grace and a commitment to His mission, even amidst challenges and resistance. Ultimately, the message is a reminder of the necessity of being in touch with God to effectively carry out His work.

T. Austin-Sparks emphasizes the transformative vision of Isaiah, where he encounters the holiness of God, leading to his profound realization of personal unworthiness ('Woe!'). This encounter not only purges Isaiah's sin ('Lo!') but also commissions him for God's purpose ('Go!'). Sparks highlights that this process is essential for the Church today, as it reflects the ongoing prophetic ministry that calls believers to recognize their need for God's grace and to fulfill their divine calling. The sermon underscores the importance of being in touch with God to truly understand our state and the necessity of His grace in our lives.