en_tn/gen/18/27.md

Look what I have done, taking it upon myself to speak to my Lord

This can be translated as "Forgive me for daring to speak to my Lord"

only dust and ashes

This metaphor describes Abraham as a human being, who will die and whose body will turn into to dust and ashes. It can also be translated as "only a mortal man" or "as unimportant as dust and ashes." (See: rc://en/ta/man/translate/figs-metaphor)

five less than fifty righteous

"only forty-five righteous people"

for lack of five

"if there are five fewer righteous people"

I will not destroy it

"I will not destroy Sodom and Gomorrah"