Analysis of the parable

In His parable in Lk 18.1-8 Jesus was using an argument of “from lesser to the greater”, reasoning that if an unrighteous judge would give justice for an unrighteous reason (to get rid of a persistent person’s “nagging”) to a person he does not care about, how much more certain it is that righteous God will give justice to those He cares about, His elect. Jesus’ application to His disciples is: don’t give up asking for and waiting for justice.