'Unjust' in the Bible

He that by usury and unjust gain increaseth his substance gathereth it for him that is gracious to the poor.

An unjust man is an abomination to the righteous; and he that is of upright way is an abomination to the wicked man.

Then shalt thou call, and Jehovah will answer; thou shalt cry, and he will say, Here I am. If thou take away from the midst of thee the yoke, the putting forth of the finger and the unjust speech,

Shall I be pure with the unjust balances, and with the bag of deceitful weights?