Genesis 18:12

Sarah laughed. — See Note on Genesis 17:17. The laughter of both husband and wife brings into prominence the inconceivable character of the fact. Sarah’s conduct has been very unjustly condemned. Though Abraham may have begun to guess that his visitors were more than men, she probably had no such suspicions. Sitting inside the tent, and catching their words only occasionally, listening, perhaps, now only because she heard her own name mentioned, when she hears them talk of her having a child she naturally laughs. thinking possibly that they did not know how old she was.

After I am waxed old. — The Hebrew word is stronger and more lively. It means “to be worn out like an old garment.”