The sermon recounts a lifetime dedicated to missionary work in Papua New Guinea, emphasizing the transformative power of faith and the importance of responding to God's call, even amidst challenging circumstances. It highlights the establishment of churches, the provision of clean water through the Baptist Drillers ministry, and the nurturing of local leaders, all while acknowledging the personal sacrifices and uncertainties inherent in cross-cultural service. Ultimately, the message underscores the necessity of embracing a life of intentional faith, recognizing that obedience to God's calling, though seemingly illogical to the world, is a reasonable and vital response to His grace and a pathway to eternal purpose.