Nagging God For Justice

1 Jesus told his disciples a story. He wanted to show them that they should always pray and not give up. 2 He said, "In a certain town there was a judge. He didn't have any respect for God or care about people. 3 A widow lived in that town. She came to the judge again and again. She kept begging him, 'Make things right for me. Someone is doing me wrong.'
4" For some time the judge refused. But finally he said to himself, 'I don't have any respect for God. I don't care about people. 5 But this widow keeps bothering me. So I will see that things are made right for her. If I don't, she will wear me out by coming again and again!' "
6 The Lord said," Listen to what the unfair judge says.
7 "God's chosen people cry out to him day and night. Won't he make things right for them? Will he keep putting them off? 8 I tell you, God will see that things are made right for them. He will make sure it happens quickly.
" But when the Son of Man comes, will he find people on earth who have faith? " (Luk 18:1-8 NIrV)

While we're not supposed to pray with vain repetition, or think God will hear us because of our many words like the heathen do, God does seem to say we should nag Him in prayer.
The meaning of "always" is at "every when". God wants us to pray at all times. We should always pray, and not give up. The word "nag" comes to mind. It means to annoy someone by constantly urging them to do something.  The unjust judge acted because the Widow was wearing him out with her request.

But notice what Jesus' example prayed for. She was asking for justice. This wasn't a selfish prayer for personal luxury, but for God to make things right for her with those who did her wrong.
Jesus' answer seems to show that God will make things right for believers when He comes back to earth, and that when He comes, justice will be brought about quickly. But it seems to indicate there will be a delay before His return, because it says He will not "keep" putting them off.

Revelation 4 says the saints who are martyred ask God how long He will delay before avenging their blood. We should desire for God's kingdom and justice to come upon earth, and we should nag God for it in prayer.