Genesis 18:28

28 what if less than fifty just men by five be, shalt thou do away all the city for five and forty? And the Lord said, I shall not do away, if I shall find five and forty there. (what if there be five less than fifty righteous people there, shalt thou do away all the city for forty-five? And the Lord said, I shall not do them all away, if I shall find forty-five righteous people there.)

Genesis 18:28 Meaning and Commentary

Genesis 18:28

Peradventure there should lack five of the fifty righteous,
&c.] Or there should be but forty five; for Abraham perceived, by the Lord's answer, that there were not fifty righteous persons in the place: wilt thou destroy all the city for [lack of] five?
Abraham proceeds gradually in his requests, and does not ask too much at once, lest he should not succeed: and he said, if l find there forty and five, I will not destroy [it];
that is, forty five righteous persons.

Genesis 18:28 In-Context

26 And the Lord said to him, If I shall find in Sodom fifty just men in the midst of the city, I shall forgive to all the place for them. (And the Lord said to him, If I shall find in Sodom fifty righteous people in the midst of the city, I shall forgive the whole place for their sake.)

27 Abraham answered and said, For I began once (For once I began), I shall speak to my Lord, since I am (but) dust and ashes;

28 what if less than fifty just men by five be, shalt thou do away all the city for five and forty? And the Lord said, I shall not do away, if I shall find five and forty there. (what if there be five less than fifty righteous people there, shalt thou do away all the city for forty-five? And the Lord said, I shall not do them all away, if I shall find forty-five righteous people there.)

29 And again Abraham said to him, But if forty be there, what shalt thou do? The Lord said, I shall not smite for forty (I shall not strike them all down, for the sake of forty righteous people).

30 Abraham said, Lord, I beseech, take thou (it) not into indignation, if I speak (again); what if thirty be found there? The Lord answered, I shall not do (it), if I shall find thirty there.