David Wilkerson emphasizes that we may be in the midst of a miracle without realizing it, as we often feel discouraged when we see no evidence of God's work. He draws from Psalm 18 to illustrate that faith involves believing God hears our cries and is actively working on our behalf, even when we cannot see it. Wilkerson highlights that David recognized God's delight in him as the reason for his deliverance, reminding us that God is continually performing miracles in our lives. He encourages us to acknowledge both instantaneous and progressive miracles, as Jesus taught his disciples about the miraculous feedings. Ultimately, the sermon calls us to trust in God's ongoing supernatural work, even in times of waiting.