Jesus uses a really harsh example – an unjust judge – to teach about prayer. Why would God, who is good, be compared to someone who 'neither feared God nor regarded man'?
The parable's power comes from the stark contrast. An unjust judge, motivated only by annoyance, eventually grants the widow's plea because she's relentless. Jesus isn't saying God is like this judge in character, but that if even a corrupt human responds to persistent requests, how much more will a loving, perfectly just God respond to His own chosen people who cry out to Him day and night! It’s an argument from the lesser to the greater: if the bad will do this, how much more will the good?
The Core Idea: God isn't distant or uncaring. He wants to grant justice, and He will. The comparison highlights the certainty of God's action, not His reluctance.