Genesis 18:29-31

New Revised Standard Version, Anglicised Catholic Edition

²⁹ Again he spoke to him, ‘Suppose forty are found there.’ He answered, ‘For the sake of forty I will not do it.’ ³⁰ Then he said, ‘Oh do not let the Lord be angry if I speak. Suppose thirty are found there.’ He answered, ‘I will not do it, if I find thirty there.’ ³¹ He said, ‘Let me take it upon myself to speak to the Lord. Suppose twenty are found there.’ He answered, ‘For the sake of twenty I will not destroy it.’