Genesis 18:13

And Sarah said, “God has made laughter for me; everyone who hears will laugh with me.”

And she said, “Who would have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”

But the son by the servant-woman had been born according to the flesh, while the son by the free woman through the promise.

By faith even Sarah herself received ability to conceive, even beyond the proper time of life, since she regarded Him faithful who had promised.

Do not neglect to show hospitality to strangers, for by this some have entertained angels without knowing it.