Os Hillman shares a personal testimony of a divine encounter where a stranger accurately prophesied about the loss of his finances and God's reward in Heaven, connecting it to Acts 2:17 where God promises to pour out His Spirit on all people, leading to prophetic visions and dreams. Hillman emphasizes the importance of being open to God's supernatural interventions in our lives, highlighting how God uses His messengers to speak words of encouragement and affirmation during times of need.