'Justice' in the Bible

and a widow was in that city, and she was coming unto him, saying, Do me justice on my opponent,

yet because this widow doth give me trouble, I will do her justice, lest, perpetually coming, she may plague me.'

and shall not God execute the justice to His choice ones, who are crying unto Him day and night -- bearing long in regard to them?

I say to you, that He will execute the justice to them quickly; but the Son of Man having come, shall he find the faith upon the earth?'