A judge which feared not God - One appointed by law to determine causes brought before him. This judge had no reverence for God, and consequently no regard for the rights of man. These two things go together. He that has no regard for God can be expected to have none for man; and our Lord has here indirectly taught us what ought to be the character of a judge that he "should" fear God and regard the rights of man. Compare Deuteronomy 1:16-17.
Regarded man - cared not for man. Had no respect for the opinions or the rights of man.

A judge, which feared not God, neither regarded man - It is no wonder that our Lord calls this person an unrighteous judge, Luke 18:6. No person is worthy to be put in the sacred office of a judge who does not deeply fear God, and tenderly respect his fellow creatures. Because this person feared not God, he paid no attention to the calls of justice; and because he respected not man, he was unmoved at the complaint of the widow. Even among the heathens this was the character of a man totally abandoned to all evil. So Dion Cassius says of Vitellius, that he neither regarded gods nor men - ουτε των ανθρωπων, ουτε των θεων εφροντιζεν.

(b) Saying, There was in a city a judge, which feared not God, neither regarded man:
(b) He does not compare things that are of equal stature, but the less with the greater: If a man receives what is rightfully his at the hands of a most unrighteous judge, much more will the prayers of the godly prevail before God.

Saying, there was in a city a judge,.... In every city in the land of Israel, there was a sanhedrim, or court of judicature; in Jerusalem was the great sanhedrim, consisting of seventy one; and in every city where there were an hundred and twenty men, or more, there was a lesser sanhedrim, consisting of twenty three; and in a city in which there were not an hundred and twenty men, were three judges; for there was no sanhedrim, or court of judicature, that consisted of less than three (l): but
"although there is no judicature less than three, "it is lawful for one to judge", according to the law, as it is said, Leviticus 19:15 "In righteousness shalt thou judge thy neighbour"; but according to the words of the Scribes, (only,) when there are three, and two that judge, their judgment is no judgment: one who is publicly approved or authorized, or who has taken a licence from the sanhedrim, it is lawful for him to judge alone, but it is not accounted a judicature; and though it is lawful, it is the command of the wise men, that he set others with him; for lo, they say, do not judge alone, for there is none that judgeth alone, but one (m).''
It may be, this judge was, an authorized and approved one; however, we have instances of single judges, or of persons that have judged alone, at least by the consent of parties.
"R. Abhu was sitting judge, in a synagogue in Caesarea, by himself, his disciples said to him, did not Rabbi so teach us, do not judge alone? he replied to them, when ye see me sit judge by myself, and ye come to me, as those that have taken upon themselves (or agreed to be judged by me); for the tradition is, of things in which they do not take upon them; but if they take upon them, (or agree to be judged,) one may judge, though alone (n).''
And again, elsewhere (o);
"if he is publicly authorized or approved, he judges, though alone; says R. Nachman, as I judge pecuniary causes alone; and so says R. Chijah, as I judge pecuniary judgments alone. --Mark Zutra, the son of R. Nachman, judged a cause, and erred; he came to R. Joseph, who said to him, if they have received thee upon them (agreed to be judged by thee) thou needst not finish; but if not, go and finish.''
The qualifications of one to be a judge, even of the bench of three, were these (p);
"wisdom, meekness (or modesty), and fear, (i.e. of God,) and hatred of mammon, (or money,) love of truth, and to have the love of men, and to be masters of a good name (or to be of good report).''
But the judge in the text, came greatly short of these qualifications: his character follows,
which feared not God, neither regarded man; and therefore, according to the canon, was disqualified from being a judge, since he was destitute of the fear of God; and seeing he regarded not men, he could neither have any love to men, nor any share in the affections of men, and such an one is very unfit to be a judge, for he cannot be thought to have any regard to his conscience, or his credit, and so not to justice and equity. The former of these characters, is what belongs to every man in a state of unregeneracy; there is no true fear of God before the eyes, or in the heart of any unconverted man; wherever it is, it is put there by the grace of God: this is one of the first things which appears in conversion, and shows itself in an hatred of sin, and in the performance of duties; and is increased by the discoveries of the grace and goodness of God; but the want of this is more visible in some than in others: some, though they have not the grace of fear, yet are under some awe of the Divine Being, and pay a regard to the word of God; and what through the force of education, and the dictates of a natural conscience, dare not go such lengths in sin, as some do: but there are others, who even say there is no God, and at least live as if there was none; they endeavour to work themselves, and others, into a disbelief of the being of God; and set their mouths against heaven, deny his providence, and despise his word; stretch out their hands, and strengthen themselves against the Almighty; and in a fearless manner, run upon the thick bosses of his bucklers; they declare their sin as Sodom, and hide it not, yea, glory in it; they promise themselves impunity, and laugh at a future judgment; and of such a cast was this judge, and therefore a very improper person for such an office; for civil magistrates, and rulers of every sort, ought to be just, ruling in the fear of God: and as for the other part of his character, it is not to be wondered at; for such that fear not God, will have little regard to men; no otherwise, or further, than they are obliged to it: indeed, judges ought not to regard men in judgment; that is, to respect the persons of men, and through affection, or flattery, or bribes, wrest judgment: but this is not the sense of the phrase here, since this agrees not with the other part of the character, and since he is called an unjust judge; but the meaning is, that he had no regard to the laws of men, any more than the laws of God; but made his own will the rule of his actions, and had no regard to doing justice between man and man; nor did he care what any man said of him; he had no concern about his reputation and character, having none to lose.
(l) Maimon. Hilch. Sanhedrin, c. 1. sect. 3, 4. (m) lb. c. 2. sect. 10, 11. (n) T. Hieros, Sanhedrin, fol. 18. 1. (o) T. Bab. Sanhedrin, fol. 5. 1. (p) Maimon. Hilch. Sanhedrin, c. 2. sect. 7.

feared not . . . neither regarded--defying the vengeance of God and despising the opinion of men.
widow--weak, desolate, defenseless (1-Timothy 5:5, which is taken from this).

A judge. The judges of the East are irresponsible, often unjust, usually delay justice for the sake of bribes.
A widow. The widow of the East, unless she has powerful friends, is absolutely helpless. In India, she is regarded almost as an outcast. It is only the Bible that proclaims God as the widow's friend.
Avenge me of mine adversary. That is, redress the wrong I have suffered.