The sermon centers on the sovereign work of God in building His church, emphasizing that every spiritual advance is ultimately the Lord's doing, not human effort, as affirmed in Psalm 118 and Matthew 6. Through personal testimonies from a missionary family serving in Cambodia, the message highlights God's faithfulness amid cultural challenges, language barriers, and physical hardships, including illness and financial burdens, all while advancing evangelism, discipleship, and church planting. The preacher underscores the eternal priorities of God's kingdom, power, and glory, calling believers to humility, surrender, and unwavering trust in divine sovereignty, especially in the face of trials and opposition. The tone is deeply pastoral and reverent, blending gratitude with a sober call to remain faithful, knowing that only what is done for Christ will last, and that God's power is made perfect in weakness.