'Forgive' in the Bible

If perhaps there are fifty righteous in the midst of the city, will you also sweep [them] away and not forgive the place on account of the fifty righteous in her midst?

And Yahweh said, "If I find fifty righteous in Sodom, in the midst of the city, then I will forgive the whole place for their sake."

"Thus you must say to Joseph, 'O, please now forgive the transgression of your brothers and their sin, for they did evil to you.' So now, please forgive the transgression of the servants of the God of your father." And Joseph wept when they spoke to him.