Luk 18:2 saying: “There was in a certain city a judge who did not fear God nor regard man.”
The moral of this parable is not about the earthly judge or even the widow, they are the supporting cast in this movie if you will. Jesus begins with the most wicked judge to paint a picture of what God is not.
Think of the words used in describing the judge, he feared not God and had no regard for man. In simple terms, he was a a judge with no moral compass and with no heart to do good. Such judges are irresponsible, often unjust, usually delay justice for the sake of bribes.
Are there not times we as believers have a wrong perception of God and envision Him in similar way? God in Psa 50:21 sends a rebuke “… You thought that I was altogether like you; But I will rebuke you, And set them in order before your eyes.” In what sense are the words true that we think wickedly that God in His dealings is like us. We are constantly judging of His knowledge and His abilities by our own. He is completely the opposite of this wicked judge and we better not forget it. Psa 89:7-14, “7 God is greatly to be feared in the assembly of the saints, And to be held in reverence by all those around Him… 11 The heavens are Yours, the earth also is Yours; The world and all its fullness, You have founded them...13 You have a mighty arm; Strong is Your hand, and high is Your right hand. 14 Righteousness and justice are the foundation of Your throne; Mercy and truth go before Your face.” Our perception of God in prayer is important, it impacts the spheres of prayers. He who begins with praise and worship biblically will have the right view of God.