'Have Mercy' in the Bible

If by chance there are fifty upright men in the town, will you give the place to destruction and not have mercy on it because of the fifty upright men?

And the Lord said, If there are fifty upright men in the town, I will have mercy on it because of them.

And he said, See now, I have undertaken to put my thoughts before the Lord: what if there are twenty there? And he said, I will have mercy because of the twenty.

And he said, O let not the Lord be angry and I will say only one word more: by chance there may be ten there. And he said, I will have mercy because of the ten.