Luke 18:1-8 ESV

The context is rock-solid. "And he told them a parable to the effect that they ought always to pray and not lose heart." Obviously, the Christian's devotion to prayer is important to God, which begs the age-old question, "Does prayer actually work?"

In anticipation of this question, Jesus contrasts God's generous and just nature with an irreverent and mean-spirited judge who was reticent to grant justice to an injured widow. (Keep in mind that women - much less, widows - had little social recourse when suffering some sort of injury. If anyone needed justice, it was a widow.) But because of her persistence, he granted her request.

Important Notes:
1) Christ wants his followers to pray.
2) And he wants them to do it often ("always" - :1; "day and night" - :7).
3) He also wants us to persist without losing faith (vs. "not lose heart" - :1; "faith" - :8).
4) God will give justice to his elect. (Of course, what does "justice" look like? Answer: Not always what we expect.)
5) This parable appears to be somewhat of a dichotomy. It teaches waiting and also speedy response from God. We must learn to live within this tension. Believing and waiting.
6) God is good. While we don't have to - and shouldn't DARE - beat him down with our requests, we should be persistent. Watch our attitudes toward God. Respect his sovereign wisdom and the unsearchable wisdom of his eternal plan for all things.