This document discusses the power of persistent prayer through analyzing a parable from Luke 18:1-8 about a widow seeking justice from an unjust judge. It makes three key points: 1) The parable teaches that believers should always pray and not lose heart. Persistent prayer can help overcome obstacles. 2) The widow faced difficulties as a nameless, manless, and voiceless woman, but God cares for His children and they can freely approach His throne of grace through prayer. 3) When God's chosen people pray persistently like the widow, God will answer quickly. Prayer strengthens faith and is inseparable from being persistent in prayer.