Job 31:21

If I have lifted up my hand against the fatherless - That is, if I have taken advantage of my rank, influence, and power, to oppress and injure him.

When I saw my help in the gate - The gate of a city was a place of concourse; a place where debates were held, and where justice was administered. Job speaks here of that part of his life when he was clothed with authority as a magistrate, or when he had power and influence as a public man. He says that he had never abused this power to oppress the fatherless. He had never taken advantage of his influence to injure them, because he saw he had a strong party under his control, or because he had power enough to carry his point, or because he had those under him who would sustain him in an oppressive measure. This is spoken with reference to the usually feeble and defenseless condition of the orphan, as one who is deprived of his natural protector and who is, therefore, liable to be wronged by those in power.